CN104587801A - Flue gas desulfurization system - Google Patents
Flue gas desulfurization system Download PDFInfo
- Publication number
- CN104587801A CN104587801A CN201510008028.4A CN201510008028A CN104587801A CN 104587801 A CN104587801 A CN 104587801A CN 201510008028 A CN201510008028 A CN 201510008028A CN 104587801 A CN104587801 A CN 104587801A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- liquid
- solution
- section
- desulfurization
- 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.)
- Pending
Links
Abstract
The invention discloses a flue gas desulfurization system which can be used for improving the desulfurization precision of a desulfurization solution, and reducing the resolving energy consumption. The system comprises a desulfurization solution resolving system, a washing solution supplying system, a capturing solution supplying system and a desulfurization tower, wherein the desulfurization tower comprises a washing section, an absorption section and a recycling section; the absorption section is sequentially provided with a liquid collection and gas distribution device, a spraying system, stuffing, a liquid distribution device, an atomizing and desulfurization device and a defogging device from bottom to top along a flue gas flowing direction; the liquid collection and gas distribution device is provided with a liquid collection outlet formed in a tower body; the spraying system is provided with a liquid inlet formed in the tower body; the liquid inlet is communicated with the liquid collection outlet by a pressurizing device; the liquid collection outlet is communicated with an inlet of the desulfurization solution resolving system; and the atomizing and desulfurization device and the liquid distribution device are communicated with the inlet of the desulfurization solution resolving system respectively. By virtue of the desulfurization system, the utilization rate of the desulfurization solution can be increased, the energy consumption is reduced and the cost is reduced.
Description
Technical field
The present invention relates to the technical field of flue gas desulfurization, especially a kind of flue gas desulphurization system.
Background technology
Known: at present, flue gas desulfurization technique has more application in petrochemical industry gas cleaning process, here, petrochemical industry flue gas is comparatively clean, does not need extra dust removal process.Different to the purified treatment of petrochemical industry flue gas, when removing the high-temperature flue gas of sulfur trioxide, chloride, fluoride, nitrogen oxide etc. containing Dust Capacity comparatively greatly, containing a large amount of, need to remove pretreatment to the dust in flue gas, the gases such as the sulfur trioxide in flue gas, hydrogen chloride are washed simultaneously.
Traditional method for washing flue gas adopts washings to wash flue gas, thus reaches the object of catching the sour gas such as dirt, cooling, washing strong acid root.Traditional method for washing flue gas exists that exhaust gas dust clearance is low, flue gas cool-down is not enough, highly acid gas absorption removes ability, dust causes the phenomenons such as filler blocking at washing section packing layer, in addition, a large amount of dust will enter the absorber portion of desulphurization system and resolve section, thus adds system removal of impurities load.
Current existing sulfur removal technology still exists that desulfuration efficiency is low, to resolve energy consumption large, desulfuration solution on absorption tower, Analytic Tower escapes the deficiency such as large.
Absorption cycle flue gas desulfurization also claims amine process to be generally applied to oil plant to remove H
2s, after the eighties in last century, amine process just starts to be applied to remove SO
2, Canadian Union Carbide Corp in 1988 has carried out Cansolv system first and has removed SO
2technological development, calendar year 2001, the successfully commercialization of Cansolv regenerable amine process desulfur technology, be positioned at the U.S., Canada, Europe first batch of 3 covering devices throw people run.2005 and 2006, there are again 5 cover Cansolv wash mills to throw people and run.
Organic amine Wet Flue Gas Desulfurization Technology is a kind of emerging flue gas desulfurization technique, there is smoke treatment after sulfur dioxide concentration low, desulfuration efficiency is high, absorbent can recycle, do not produce secondary pollution, can effectively solve the advantages such as the stability problem of flue gas acid preparing, be with a wide range of applications.
At home, adopt the sintered flue gas desulfurization device that Cansolv technology is set up, the problems such as it also exists burn into blocking in running, cost is high, synchronous operation rate is low.
The Chinese patent of patent publication No. CN 103706237 A discloses a kind of flue gas desulphurization system; This flue gas desulphurization system comprises desulfurizing tower, and described desulfurizing tower sets gradually flue gas washing section, absorber portion, exhausting section along flow of flue gas direction.The technical problem that this patent mainly solves is the problems such as the suspended impurity content of desulfuration solution is high, system jams, desulfurization degree are low.
The problem such as the energy consumption that the precision that is higher, desulfuration solution desulfurization of the sulfur content after but this desulphurization system still exists flue gas desulfurization in flue gas is lower, carry out resolving after desulfurizing agent desulfurization is high, production cost is high.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of precision that can improve desulfuration solution desulfurization, improves desulfuration solution desulfurization degree, reduces the flue gas desulphurization system of resolving energy consumption.
The technical solution adopted for the present invention to solve the technical problems is: flue gas desulphurization system, comprise desulfuration solution resolution system, cleaning solution feed system, trapping solution feed system, desulfurizing tower, the tower body inner chamber that described desulfurizing tower comprises tower body and surrounded by tower body, and described desulfurizing tower is divided into washing section, absorber portion and exhausting section along flow of flue gas direction; Described exhausting section has the trapping solution entrance be communicated with trapping solution feed system, and described washing section has the cleaning solution entrance be communicated with cleaning solution feed system; Described washing section has smoke inlet, waste liquid outlet and sludge outlet; Described exhausting section has Ethylene recov outlet;
Described absorber portion comprises packing material absorbing section and cyclic absorption section;
Described packing material absorbing section, comprises demister, spraying desulphurization device, liquid distribution device and filler; Described cyclic absorption section, comprises spray system and liquid collecting distribution device;
Described liquid collecting distribution device, spray system, filler, liquid distribution device, spraying desulphurization device and demister, arrange along flow of flue gas direction from the bottom to top successively at the inner chamber of tower body absorber portion;
Described liquid collecting distribution device has the liquid collecting outlet be arranged on tower body; Described spray equipment has the liquid inlet be arranged on tower body; Described liquid inlet is exported with liquid collecting and is communicated with by supercharging device; The entrance that described liquid collecting outlet and desulfuration solution resolution system have is communicated with; The outlet that described spraying desulphurization device and liquid distribution device have with desulfuration solution resolution system respectively.
Further, described spray system comprises the first spray equipment and the second spray equipment that distribute along flow of flue gas direction staggered floor, described second spray equipment has the second liquid entrance be arranged on tower body, and described first spray equipment has the first liquid entrance be arranged on tower body; Described first liquid entrance is exported with liquid collecting and is communicated with by supercharging device, and described second liquid entrance is exported with liquid collecting and is communicated with by supercharging device.
Preferably, described first spray equipment and the second spray equipment include shower, shower nozzle and support, and described shower nozzle is arranged on shower, and described shower is rack-mount, and described support installing is on a cross section of absorber portion inner chamber; Described first spray equipment is positioned at above the second spray equipment; The shower nozzle of described first spray equipment and the shower nozzle of the second spray equipment 22 are dislocatedly distributed.
Further, disconnected liquid dish is set between described absorber portion and exhausting section and flue gas rises gas hood.
Further, described filler is woven wire ripple deflection plate filler.
Further, described Ethylene recov outlet is communicated with the liquid inlet that trapping solution feed system has.
The invention has the beneficial effects as follows: flue gas desulphurization system provided by the invention; Because absorber portion is divided into cyclic absorption section and packing material absorbing section; First utilize rich solution to carry out first time thick desulfurization to flue gas in cyclic absorption section in the course of the work, then utilize desulfuration solution to carry out fine de-sulfur to flue gas in packing material absorbing section; Thus improve the precision of desulfurization.Desulfuration solution forms rich solution after packing material absorbing section carries out desulfurization to flue gas simultaneously; Owing to adopting rich solution to flue gas desulfurization in cyclic absorption section, therefore improve the utilization rate of desulfuration solution, desulfuration solution can be utilized fully, improve desulfuration efficiency; Decrease the use amount of desulfuration solution, thus reduce the energy consumption consumed when resolution system is resolved desulfuration solution; Reduce production cost.
Accompanying drawing explanation
Fig. 1 is the flue gas desulphurization system structural representation in the embodiment of the present invention;
Fig. 2 is the structure diagram of the first spray equipment top view in the embodiment of the present invention;
Fig. 3 is the structure diagram of the second spray equipment top view under the visual angle of Fig. 2 in the embodiment of the present invention;
Indicate in figure: 1-washing section, 2-absorber portion, 21-liquid collecting distribution device, 22-second spray equipment, 23-first spray equipment, 24-filler, 25-liquid distribution device, 26-spraying desulphurization device, 27-demister, 201-shower, 202-shower nozzle, 203-support, 3-exhausting section, 31-reclaims liquid collecting outlet, 32-liquid collecting entrance, 4-smoke inlet, 5-cleaning solution feed system, 6-desulfuration solution resolution system, 7-liquid collecting feed system, 8-sludge outlet.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described.
Flue gas desulphurization system as shown in Figure 1, comprise desulfuration solution resolution system 6, cleaning solution feed system 5, trapping solution feed system 7, desulfurizing tower, the tower body inner chamber that described desulfurizing tower comprises tower body and surrounded by tower body, and described desulfurizing tower is divided into washing section 1, absorber portion 2 and exhausting section 3 along flow of flue gas direction; Described exhausting section 3 has the trapping solution entrance 32 be communicated with trapping solution feed system 7, and described washing section 1 has the cleaning solution entrance be communicated with cleaning solution feed system 5; Described washing section 1 has smoke inlet 4, waste liquid outlet and sludge outlet 8; Described exhausting section 3 has Ethylene recov outlet 31;
Described desulfurizing tower is segmentation desulfurizing tower; Described absorber portion 2 comprises packing material absorbing section and cyclic absorption section;
Described packing material absorbing section, comprises demister 27, spraying desulphurization device 26, liquid distribution device 25 and filler 24; Described cyclic absorption section, comprises spray system and liquid collecting distribution device 21;
Described liquid collecting distribution device 21, spray system, filler 24, liquid distribution device 25, spraying desulphurization device 26 and demister 27, arrange along flow of flue gas direction from the bottom to top successively at the inner chamber of tower body absorber portion 2;
Described liquid collecting distribution device 21 has the liquid collecting outlet be arranged on tower body; Described spray equipment has the liquid inlet be arranged on tower body; Described liquid inlet is exported with liquid collecting and is communicated with by supercharging device; The entrance that described liquid collecting outlet and desulfuration solution resolution system 6 have is communicated with; The outlet that described spraying desulphurization device 26 and liquid distribution device 25 have with desulfuration solution resolution system 6 respectively.
The Main Function of desulfuration solution resolution system 6 is: after desulfurizing tower carries out desulfurization by desulfuration solution to flue gas, and produce the desulfuration solution of high-concentration sulfur dioxide, the desulfuration solution of desulfuration solution resolution system 6 to this high-concentration sulfur dioxide is resolved.Desulfuration solution resolution system 6 comprises Analytic Tower, heat exchanger, to boil tower; After the desulfuration solution of course of work middle and high concentration sulfur dioxide is heated by heat exchanger, be sent in Analytic Tower and resolve, being sent to again in the tower that boils again after parsing is further resolved.Resolve the desulfuration solution obtained and send into the use of desulfurizing tower Inner eycle.
Cleaning solution feed system 5 Main Function is: for the washing section 1 of desulfurizing tower provides wash solution, and a kind of preferred cleaning solution feed system 5 comprises cleaning solution storage tank and compression pump; Cleaning solution is stored in cleaning solution storage tank that the flue gas be transported in washing section 1 pair of washing section 1 of desulfurizing tower washs by cleaning solution by compression pump.
Trapping solution feed system 7 Main Function is: for the exhausting section 3 of desulfurizing tower provides trapping solution; The desulfuration solution that is atomized and a small amount of sulfur dioxide in the exhausting section 3 of desulfurizing tower is by the flue gas in trapping solution removing exhausting section 3.A kind of trapping solution feed system 7 comprises trapping solution storage tank and compression pump; Trapping solution is stored in desulfuration solution residual in the flue gas that the exhausting section 3 trapping solution being transported to desulfurizing tower by compression pump in cleaning solution storage tank removes in exhausting section 3, and desulfuration solution is reclaimed in trapping.
Described demister 27 Main Function is the middle acid mist removing flue gas; Demister 27 can be made up of multiple demister; Demister can be existing any demister, and a kind of preferred mode is that demister 27 adopts two demisters, and described demister is dull and stereotyped demister.
Described spraying desulphurization device 26 Main Function is that desulfuration solution is sprayed into mist state; Thus when desulfuration solution is contacted with flue gas, improve desulfuration efficiency, improve the desulfurization degree of desulfuration solution.Described spraying desulphurization device 26 can be realized by high-pressure fog; A kind of preferred mode is set to the mode that publication number adopts for the first spraying desulphurization device in the flue gas desulphurization system disclosed in CN 103706237 A for described spraying desulphurization device 26.
Described liquid distribution device 25 Main Function is uniformly distributed by desulfuration solution, can be uniformly distributed after making desulfuration solution undercoating liquid distribution apparatus 25 in the inner chamber of desulfurizing tower.Described liquid distribution device 25 can arrange hole by arranging many liquid distributor roads above filler 24 on pipeline; By passing into the liquid with pressure in pipeline, liquid is flowed out by hole under pressure thus realizes cloth liquid.But this kind of mode cloth liquid uniformity is poor; Hole easily blocks, job insecurity.A kind of preferred mode is set to the mode that publication number adopts for first liquid distribution apparatus in the flue gas desulphurization system disclosed in CN 103706237 A for described liquid distribution device 25.
The described liquid collecting distribution device 21 Main Function flue gas be to provide after washing section 1 washs enters the rising passway of absorber portion 2, and the desulfuration solution absorbing the oxysulfide in flue gas in absorber portion 2 is discharged desulfurizing tower, and the solution intercepted in absorber portion 2 enters in washing section 1.The mode that a kind of preferred mode adopts for the first liquid collecting distribution device in the flue gas desulphurization system disclosed in CN 103706237 A for described liquid collecting distribution device 21 publication number.
In the course of work, sinter fume enters in desulfurizing tower by the smoke inlet 4 of desulfurizing tower washing section 3; First flue gas carries out washing the dust in removal flue gas and acid mist at washing section 3.Cleaning solution feed system 5 provides cleaning solution for washing section 3, and cleaning solution generally adopts water.Flue gas, after washing, enters into absorber portion 2 by the washing section 3 of desulfurizing tower; Because absorber portion 2 is divided into cyclic absorption section and packing material absorbing section.Therefore first flue gas enters cyclic absorption section and carries out just desulfurization, then enters into packing material absorbing section and carry out fine de-sulfur.First flue gas to absorb the steam in flue gas by the liquid collecting distribution device 21 of cyclic absorption section in cyclic absorption section, is discharged uniformly in cocycle absorber portion by flue gas simultaneously.The desulfurizing agent that flue gas is spraying with the spray system of cyclic absorption section after liquid collecting distribution device 21 contacts, and sloughs the part sulfur dioxide in flue gas and sulfide.Then flue gas enters into packing material absorbing section, and first flue gas carries out desulfurization through filler.Desulfuration solution resolution system 6 supplies desulfuration solution to liquid distribution device 25 and spraying desulphurization device 26.Owing to being provided with liquid distribution device 25 above filler 24; Desulfuration solution is evenly distributed on filler 24 by liquid distribution device 25, thus makes desulfuration solution on filler 24 even, and when avoiding flue gas by filler 24, partial fume can not carry out the situation of desulfurization.Described liquid distribution device 25 is provided with spraying desulphurization device 26; Spraying desulphurization device 26 by desulfuration solution spray nebulize, advantageously in flue gas through spraying desulphurization device 26 time, flue gas contacts with vaporific desulfuration solution is reverse, can improve the desulfurization degree of desulfuration solution; Then flue gas carries out demist through demister 27.The exhausting section 3 entering into desulfurizing tower through the flue gas of demist carries out trapping recovery process at exhausting section 3 pairs of flue gases.Desulfurizing tower to carry out after the work of a period of time, in washing section 1, carrying out dedusting by cleaning solution to flue gas; The bottom formation mud that dust in flue gas can be stored in washing section 1 is discharged eventually through sludge outlet 8.The waste liquid that cleaning solution is carrying out producing in the process of dedusting washing to flue gas is discharged by waste liquid outlet.
Because described liquid collecting distribution device 21 has the liquid collecting outlet be arranged on tower body; Described spray equipment has the liquid inlet be arranged on tower body; Described liquid inlet is exported with liquid collecting and is communicated with by supercharging device; The entrance that described liquid collecting outlet and desulfuration solution resolution system 6 have is communicated with; The outlet that described spraying desulphurization device 26 and liquid distribution device 25 have with desulfuration solution resolution system 6 respectively.
Therefore rich solution is formed after the sulfur dioxide that desulfuration solution absorbs in flue gas in packing material absorbing section, the rich solution that liquid collecting distribution device 21 pairs of rich solutions of cyclic absorption section and spray system are sprayed carries out trapping and reclaims, and is transported to spray system as desulfurizing agent using trapping the rich solution part be recovered to by supercharging device; Another part conveying understands that desulfuration solution resolution system 6 is resolved.Desulfuration solution after parsing is transported to liquid distribution device 25 and spraying desulphurization device 26 pairs of flue gases carry out desulfurization.Then rich solution is formed; Rich solution is trapped by liquid collecting distribution device 21 again and reclaims; Thus realize recycling of desulfuration solution.
In the above-mentioned course of work, flue gas is when entering absorber portion 2, first carries out desulfurization process by cyclic absorption section to flue gas; And then enter into packing material absorbing section and carry out desulfurization.Therefore in absorber portion 2, twice desulfurization has been carried out to flue gas, made the precision of flue gas desulfurization higher.Simultaneously owing to having carried out desulfurization in cyclic absorption section to flue gas, therefore the concentration of the sulfur dioxide sulfides of flue gas after cyclic absorption section in flue gas reduces.Again desulfurization is carried out to flue gas in packing material absorbing section, thus make the content of sulfur dioxide in flue gas lower.Compared with traditional desulfurization method, because flue gas carries out just desulfurization, therefore when packing material absorbing section carries out desulfurization to flue gas, the Len req of the filler 24 of employing is shorter; Therefore can shorten the length of filler 24, thus the input cost of filler 24 can be reduced.
Owing to the rich solution formed after packing material absorbing section desulfuration solution sulfur dioxide absorption to be carried out the desulfurizing agent of just desulfurization in the above-mentioned course of work to flue gas as cyclic absorption section; Therefore improve the utilization rate of desulfuration solution, the use amount simultaneously desulfuration solution will being lacked; Reduce the parsing energy consumption of desulfuration solution resolution system 6 pairs of desulfuration solutions.
Flue gas desulphurization system of the present invention is by being set to cyclic absorption section and packing material absorbing section by absorber portion 2, the rich solution utilizing a part of desulfuration solution to absorb sulfur dioxide formation in cyclic absorption section carries out just desulfurization to flue gas, and then packing section carries out fine de-sulfur to the flue gas utilization desulfuration solution carrying out just desulfurization.Thus improve the utilization rate of desulfuration solution, improve desulfuration efficiency; Decrease the consumption of desulfuration solution, reduce the energy consumption that desulfuration solution formation rich solution carries out resolving simultaneously; Reduce energy consumption, save production cost.
Shown spray system can be set to a spray equipment, also can be set to multiple spray equipment along flow of flue gas direction; The rich solution sprayed to make spray system can carry out abundant desulfurization to flue gas.As shown in Figure 1, described spray system comprises the first spray equipment 23 and the second spray equipment 22 along the distribution of flow of flue gas direction staggered floor, described second spray equipment 22 has the second liquid entrance be arranged on tower body, and described first spray equipment 23 has the first liquid entrance be arranged on tower body; Described first liquid entrance is exported with liquid collecting and is communicated with by supercharging device, and described second liquid entrance is exported with liquid collecting and is communicated with by supercharging device.By arranging the first spray equipment 23 and the second spray equipment 22, and the first spray equipment 23 and the distribution of the second spray equipment 22 staggered floor.Therefore, it is possible to ensure that rich solution fully can contact with by all gas in a cross section in desulfurizing tower when being sprayed with the second spray equipment 22 by the first spray equipment 23, improve desulfurization degree.
Described first spray equipment 23 and the second spray equipment 22 by implemented in many forms, by arranging body in desulfurizing tower, body can be arranged cavity, being realized the spray of rich solution by the rich solution passing into band high pressure in body.Can be distributed in the cyclic absorption section of desulfurizing tower by sufficient uniform spraying to make rich solution, wherein a kind of concrete mode as shown in Figures 2 and 3, described first spray equipment 23 and the second spray equipment 22 include shower 201, shower nozzle 202 and support 203, described shower nozzle 202 is arranged on shower 201, described shower 201 is arranged on support 203, and described support 203 is arranged on a cross section of absorber portion 2 inner chamber; Described first spray equipment 23 is positioned at above the second spray equipment 22; The shower nozzle 202 of described first spray equipment 23 and the shower nozzle 202 of the second spray equipment 22 are dislocatedly distributed.The shower nozzle 202 of described first spray equipment 23 and the shower nozzle 202 of the second spray equipment 22 are dislocatedly distributed and refer to directly over the gap of the shower nozzle 202 of the first spray equipment 23 between upper adjacent two shower nozzles 202 of the second spray equipment 22.
Liquid in order to avoid exhausting section enters into absorber portion 2, ensure that the flue gas of absorber portion 2 after desulfurization can enter between described absorber portion 2 and exhausting section 3 smoothly simultaneously and arrange the first liquid collecting distribution device, described liquid collecting distribution device comprises disconnected liquid dish and flue gas rises gas hood.Flue gas after absorber portion 2 carries out desulfurization rises gas hood by flue gas and can enter into exhausting section 3 uniformly and reclaim.
In the course of work, the trapping solution of exhausting section 3 adopts soft water, for washing the desulfuration solution in flue gas, collected by disconnected liquid dish when desulfuration solution concentration is lower in the trapping solution in exhausting section 3 and recycle, when desulfuration solution concentration reaches finite concentration in exhausting section 3, then this solution is sent into desulfurization section.Therefore the desulfuration solution of the Ethylene recov dilution absorber portion 2 of large volume low-concentration is prevented, the desulfuration solution concentration of absorber portion 2 is generally 70-90g/L, the desulfuration solution concentration of exhausting section 3 is generally 0-10g/L, when reaching 10g/L, replacing section solution, and supplement soft water, replacement fluid is sent into absorber portion 2 and is mixed with rich solution, also prevent exhausting section 2 desulfuration solution concentration high simultaneously, escape further with flue gas, therefore, the desulfuration solution concentration of exhausting section 2 is more low better, control its concentration, regular replacing section withdrawal liquid sends into the rich solution of hypomere, prevent dilution desulfurization section solution, reduce desulfurization precision and desorb precision.Flue gas rises gas hood for uniform gas distribution simultaneously, and gas can upwards be flowed in exhausting section 3 from absorber portion 2.
In order to make desulfuration solution can be uniformly distributed in filler 24, described filler 24 is woven wire ripple deflection plate filler.Along the folding line Clearance Flow in woven wire ripple deflection plate filler, thus full whole filler 24 can be rushed and is uniformly distributed in filler 24 after adopting woven wire ripple deflection plate filler desulfuration solution undercoating liquid distribution apparatus 25 to be evenly distributed on filler 24 surface.
In order to make it possible to realize recycling to the trapping solution in exhausting section 3, reduce costs.Further, described Ethylene recov outlet 31 is communicated with the liquid inlet that trapping solution feed system 7 has.After trapping solution achieves the trapping of desulfuration solution in flue gas in exhausting section 3, export 31 by Ethylene recov and discharge, be then passed in liquid collecting feed system 7 by Ethylene recov outlet 31 and recycle.Thus the use amount of trapping solution can be reduced, improve the utilization rate of trapping solution, reduce costs.
Embodiment
As shown in Figure 1 to Figure 3, the flue gas desulphurization system that the present embodiment adopts comprises: comprise desulfuration solution resolution system 6, cleaning solution feed system 5, trapping solution feed system 7, desulfurizing tower.
The tower body inner chamber that described desulfurizing tower comprises tower body and surrounded by tower body, and described desulfurizing tower is divided into washing section 1, absorber portion 2 and exhausting section 3 along flow of flue gas direction.
Described exhausting section 3 has the trapping solution entrance 32 be communicated with trapping solution feed system 7, and described washing section 1 has the cleaning solution entrance be communicated with cleaning solution feed system 5; Described washing section 1 has smoke inlet 4, waste liquid outlet and sludge outlet 8; Described exhausting section 3 has Ethylene recov outlet 31;
Described absorber portion 2 comprises packing material absorbing section and cyclic absorption section; Described packing material absorbing section, comprises demister 27, spraying desulphurization device 26, liquid distribution device 25 and filler 24; Described cyclic absorption section, comprises spray system and liquid collecting distribution device 21; Described liquid collecting distribution device 21, spray system, filler 24, liquid distribution device 25, spraying desulphurization device 26 and demister 27, arrange along flow of flue gas direction from the bottom to top successively at the inner chamber of tower body absorber portion 2; Described liquid collecting distribution device 21 has the liquid collecting outlet be arranged on tower body; Described spray equipment has the liquid inlet be arranged on tower body; Described liquid inlet is exported with liquid collecting and is communicated with by supercharging device; The entrance that described liquid collecting outlet and desulfuration solution resolution system 6 have is communicated with; The outlet that described spraying desulphurization device 26 and liquid distribution device 25 have with desulfuration solution resolution system 6 respectively; Described Ethylene recov outlet 31 is communicated with the liquid inlet that trapping solution feed system 7 has.Described filler 24 is woven wire ripple deflection plate filler.
Described spray system comprises the first spray equipment 23 and the second spray equipment 22 along the distribution of flow of flue gas direction staggered floor, described second spray equipment 22 has the second liquid entrance be arranged on tower body, and described first spray equipment 23 has the first liquid entrance be arranged on tower body; Described first liquid entrance is exported with liquid collecting and is communicated with by supercharging device, and described second liquid entrance is exported with liquid collecting and is communicated with by supercharging device.
Described first spray equipment 23 and the second spray equipment 22 include shower 201, shower nozzle 202 and support 203, described shower nozzle 202 is arranged on shower 201, described shower 201 is arranged on support 203, and described support 203 is arranged on a cross section of absorber portion 2 inner chamber; Described first spray equipment 23 is positioned at above the second spray equipment 22; The shower nozzle 202 of described first spray equipment 23 and the shower nozzle 202 of the second spray equipment 22 are dislocatedly distributed.
Flue gas distributor, spray washing system is disposed with from the bottom to top by flow of flue gas direction, flue gas washing demister in described washing section 1.
Trapping solution trap, trapping solution filler, trapping solution liquid distribution system and demister is disposed with from the bottom to top by flow of flue gas direction in described exhausting section 3.Described trapping solution liquid distribution system is made up of first-stage tank liquid line and second-level groove liquid line.
Between described absorber portion 2 and exhausting section 3, disconnected liquid dish is set and flue gas rises gas hood.
In the course of work:
1, the washing section 1 that flue gas enters desulfurizing tower carries out washing process
1,1 flue gas through booster fan supercharging, flue, enter desulfurizing tower; Flue gas is first by the flue gas distributor of washing section 1; Flue gas is evenly distributed on the cross section of desulfurizing tower inner chamber by flue gas distributor.
1,2 cleaning solution feed systems 5 are to the spray washing system supply cleaning solution of washing section 1; Flue gas carries out washing cooling dedusting by spray washing system.
1,3 through washing after flue-gas temperature be reduced to 40 ~ 50 degree, be then admitted to absorber portion 2.
2, flue gas carries out desulfurization in absorber portion 2
2,1 flue gas enters into absorber portion 2 after being washed by washing section 1; The liquid collecting distribution device 21 arranged by cyclic absorption section carries out gas distribution; Flue gas is uniformly distributed on the cross section of absorber portion 2.
2,2 flue gases enter the cyclic absorption section of absorber portion 2; The spray system arranged by cyclic absorption section is sprayed rich solution and is carried out just desulfurization to flue gas.
2,3 flue gases enter into the packing material absorbing section of absorber portion 2 after thick desulfurization; Be evenly distributed on filler 24 on by liquid distribution device 25 by desulfuration solution in packing material absorbing section, flue gas contacts with the desulfuration solution on filler 24 and carries out desulfurization,
2,4 by the spraying desulphurization device 26 of packing material absorbing section, desulfuration solution is sprayed into mist state, by the desulfuration solution of mist state, desulfurization is carried out to flue gas, realize fine de-sulfur.
3, flue gas carries out trapping recovery process at exhausting section 3
3,1 trapping solution is supplied by trapping solution feed system 7 to trapping solution liquid distribution system, trapping solution is flowed into from first-stage tank, then be dispersed in second-level groove, be dispersed on trapping solution filler by second-level groove, reverse contact is carried out with trapping solution in filler by flue gas, thus the desulfuration solution in washing flue gas, and there is a part of desulfurizing function.
3,2 remove by the demister in exhausting section 3 a small amount of desulfuration solution fog contained in flue gas after desulfurization.
3,3 flue gases are discharged by desulfurizing tower top exit.
3,4 carry out trapping recycle and reuse by the trapping solution trap of exhausting section 3 to trapping solution,
Trapping solution carries out trapping by trapping solution trap and reclaims after having trapped the desulfuration solution in flue gas; Then be transported to trapping solution liquid distribution system again to re-use.
Replace according to the desulfuration solution concentration in trapping solution circulation fluid, reach finite concentration, trapping solution is displaced in sulfur removing pregnant solution and recycles together with rich solution, and supplements part water in trapping solution.
4, the recycling of desulfuration solution
4,1 be captured in packing material absorbing section absorbing sulfur dioxide in flue by the liquid collecting distribution device 21 in cyclic absorption section and become the rich solution that the desulfuration solution of rich solution and spray system spray; The rich solution trapped is transported to the spray system of cyclic absorption section by supercharging device by predetermined Inner eycle amount; The rich solution that spray system is sprayed carries out reverse contact with flue gas and realizes desulfurization.Rich solution is trapped recovery by liquid collecting distribution device 21 again after carrying out desulfurization to flue gas, is sent to spray system by predetermined Inner eycle amount; Move in circles; Thus realize the inner loop utilization of rich solution in desulfurizing tower.
4,2 rich solutions trapping recovery by liquid collecting distribution device 21 are sent to spray system by predetermined Inner eycle amount; The rich solution of remainder is sent to resolution system and resolves; Desulfuration solution after parsing is transported to liquid distribution device 25 and the spraying desulphurization device 24 of packing material absorbing section.Liquid distribution device 25 and spraying desulphurization device 24 utilize desulfuration solution to carry out desulfurization in packing section to flue gas and form rich solution; Rich solution is trapped recovery by liquid collecting distribution device 21; A part for rich solution is sent to again in resolution system 6 and so moves in circles; Thus realize recycling of desulfuration solution.
Above-described embodiment is owing to adopting flue gas desulphurization system provided by the present invention and corresponding flue gas desulfurization technique; Therefore, when entering absorber portion to flue gas and carrying out desulfurization, achieve the first desulfurization to flue gas and fine de-sulfur, thus improve desulfurization precision, simultaneously due to adopt in the process of first desulfurization formed after desulfuration solution sulfur dioxide absorption in fine de-sulfur rich solution; Therefore improve the utilization rate of desulfuration solution, decrease the use amount of desulfuration solution, reduce parsing energy consumption, improve production efficiency, reduce production cost.
Claims (5)
1. flue gas desulphurization system, comprise desulfuration solution resolution system (6), cleaning solution feed system (5), trapping solution feed system (7), desulfurizing tower, the tower body inner chamber that described desulfurizing tower comprises tower body and surrounded by tower body, and described desulfurizing tower is divided into washing section (1), absorber portion (2) and exhausting section (3) along flow of flue gas direction; Described exhausting section (3) has the trapping solution entrance (32) be communicated with trapping solution feed system (7), and described washing section (1) has the cleaning solution entrance be communicated with cleaning solution feed system (5); Described washing section (1) has smoke inlet (4), waste liquid outlet and sludge outlet (8); Described exhausting section (3) has Ethylene recov outlet (31);
It is characterized in that: described absorber portion (2) comprises packing material absorbing section and cyclic absorption section;
Described packing material absorbing section, comprises demister (27), spraying desulphurization device (26), liquid distribution device (25) and filler (24); Described cyclic absorption section, comprises spray system and liquid collecting distribution device (21);
Described liquid collecting distribution device (21), spray system, filler (24), liquid distribution device (25), spraying desulphurization device (26) and demister (27), arrange along flow of flue gas direction from the bottom to top successively at the inner chamber of tower body absorber portion (2);
Described liquid collecting distribution device (21) has the liquid collecting outlet be arranged on tower body; Described spray equipment has the liquid inlet be arranged on tower body; Described liquid inlet is exported with liquid collecting and is communicated with by supercharging device; The entrance that described liquid collecting outlet has with desulfuration solution resolution system (6) is communicated with; The outlet that described spraying desulphurization device (26) and liquid distribution device (25) have with desulfuration solution resolution system (6) respectively.
2. flue gas desulphurization system as claimed in claim 1, it is characterized in that: described spray system comprises the first spray equipment (23) and the second spray equipment (22) that distribute along flow of flue gas direction staggered floor, described second spray equipment (22) has the second liquid entrance be arranged on tower body, and described first spray equipment (23) has the first liquid entrance be arranged on tower body; Described first liquid entrance is exported with liquid collecting and is communicated with by supercharging device, and described second liquid entrance is exported with liquid collecting and is communicated with by supercharging device.
3. flue gas desulphurization system as claimed in claim 2, it is characterized in that: described first spray equipment (23) and the second spray equipment (22) include shower (201), shower nozzle (202) and support (203), described shower nozzle (202) is arranged on shower (201), described shower (201) is arranged on support (203), and described support (203) is arranged on a cross section of absorber portion (2) inner chamber; Described first spray equipment (23) is positioned at the second spray equipment (22) top; The shower nozzle (202) of described first spray equipment (23) and the shower nozzle (202) of the second spray equipment (22) are dislocatedly distributed.
4. flue gas desulphurization system as claimed in claim 3, is characterized in that: described filler (24) is woven wire ripple deflection plate filler.
5. the flue gas desulphurization system as described in Claims 1-4 any one claim, is characterized in that: described Ethylene recov outlet (31) is communicated with the liquid inlet that trapping solution feed system (7) has.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510008028.4A CN104587801A (en) | 2015-01-08 | 2015-01-08 | Flue gas desulfurization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510008028.4A CN104587801A (en) | 2015-01-08 | 2015-01-08 | Flue gas desulfurization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104587801A true CN104587801A (en) | 2015-05-06 |
Family
ID=53114060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510008028.4A Pending CN104587801A (en) | 2015-01-08 | 2015-01-08 | Flue gas desulfurization system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104587801A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110787603A (en) * | 2019-12-02 | 2020-02-14 | 哈尔滨理工大学 | Efficient boiler flue gas desulfurization equipment |
| CN112439309A (en) * | 2019-09-05 | 2021-03-05 | 中石油吉林化工工程有限公司 | Acrylonitrile device rapid cooling system |
| CN112439307A (en) * | 2019-09-05 | 2021-03-05 | 中石油吉林化工工程有限公司 | Liquid distributor and liquid distribution device for quenching tower |
| CN112441946A (en) * | 2019-09-05 | 2021-03-05 | 中石油吉林化工工程有限公司 | Production process of acrylonitrile device absorption tower |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202146708U (en) * | 2011-07-15 | 2012-02-22 | 攀钢集团有限公司 | Flue gas desulfurization system |
| CN103706237A (en) * | 2013-12-11 | 2014-04-09 | 攀钢集团攀枝花钢铁研究院有限公司 | Flue gas desulfurization system |
| CN203954959U (en) * | 2013-12-11 | 2014-11-26 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of flue gas pre-wash system |
-
2015
- 2015-01-08 CN CN201510008028.4A patent/CN104587801A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202146708U (en) * | 2011-07-15 | 2012-02-22 | 攀钢集团有限公司 | Flue gas desulfurization system |
| CN103706237A (en) * | 2013-12-11 | 2014-04-09 | 攀钢集团攀枝花钢铁研究院有限公司 | Flue gas desulfurization system |
| CN203954959U (en) * | 2013-12-11 | 2014-11-26 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of flue gas pre-wash system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112439309A (en) * | 2019-09-05 | 2021-03-05 | 中石油吉林化工工程有限公司 | Acrylonitrile device rapid cooling system |
| CN112439307A (en) * | 2019-09-05 | 2021-03-05 | 中石油吉林化工工程有限公司 | Liquid distributor and liquid distribution device for quenching tower |
| CN112441946A (en) * | 2019-09-05 | 2021-03-05 | 中石油吉林化工工程有限公司 | Production process of acrylonitrile device absorption tower |
| CN112441946B (en) * | 2019-09-05 | 2023-08-11 | 中石油吉林化工工程有限公司 | Production process of acrylonitrile device absorption tower |
| CN110787603A (en) * | 2019-12-02 | 2020-02-14 | 哈尔滨理工大学 | Efficient boiler flue gas desulfurization equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102302894B (en) | Renewable flue gas desulphurization process | |
| CN201058267Y (en) | Device for cleaning and reclaiming urea dust | |
| CN104587801A (en) | Flue gas desulfurization system | |
| CN101700463A (en) | Method for desulfurating and denitrating and recovering sulfur resource in closed cycle way | |
| CN102992351B (en) | Method and device for purifying ammonia recovered from coal chemical industry wastewater | |
| CN206463697U (en) | One kind circulation high-pressure spraying pond | |
| CN205127751U (en) | Remove dust and denitration integrated device | |
| CN102120937A (en) | Purification method of coke oven gas matched with vacuum carbonate desulphurization | |
| CN104492243A (en) | Flue gas desulphurization system and flue gas desulphurization process | |
| CN102228776A (en) | Method and apparatus for removing sulfur dioxide from sulfuric acid industrial tail gas, and for recovering sulfuric acid | |
| CN206082112U (en) | Reverse -flow scrubbing tower | |
| CN103589462A (en) | Technological method for purifying coal oven gas and recovering chemical products | |
| CN102872695A (en) | Method for sintering and desulfurizing enriched smoke to prepare sulfuric acid | |
| CN203777900U (en) | Flue gas desulphurization system | |
| CN104307344A (en) | Carbon black tail gas purifying device | |
| CN203990292U (en) | A kind of viscose rayon emission-control equipment | |
| CN205867906U (en) | Denitration dust remover | |
| CN103446851B (en) | Recovery and purification device and method for phosphoric acid from tail gases generated in chemical method activated carbon production process | |
| CN103224817B (en) | Coal gas dedusting decoking desulfurization system and method | |
| CN211612052U (en) | Ammonium nitrate calcium powder dust recovery system | |
| CN107388847A (en) | Heat reclaim unit and technique in flue gas desulfurization and denitration technique | |
| CN208287767U (en) | A kind of sulfur dioxide reclaiming system | |
| CN106039941A (en) | Method used for desulphurization and denitration closed cycle and sulfur resource recovery | |
| CN205156423U (en) | Exhaust purification and waste heat recovery use multipurposely system | |
| KR101277569B1 (en) | Wet scrubber with multi-stage spray structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150506 |
|
| RJ01 | Rejection of invention patent application after publication |