CN204529775U - Coke gas desulfurization regeneration integrated tower - Google Patents
Coke gas desulfurization regeneration integrated tower Download PDFInfo
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- CN204529775U CN204529775U CN201520144013.6U CN201520144013U CN204529775U CN 204529775 U CN204529775 U CN 204529775U CN 201520144013 U CN201520144013 U CN 201520144013U CN 204529775 U CN204529775 U CN 204529775U
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Abstract
The utility model relates to coke gas desulfurization regeneration integrated tower, by being changed to washing tail gas unit after regeneration, regeneration unit, desulfurization unit by existing traditional sulfurization process facilities, rich solution storage reaction unit optimization forms an overall tower structure design after desulfurization, and setting is provided with corresponding coil tube type Aftercooling device in 4 layers of packing layer support of desulfurization unit, the hydrogen sulfide content after desulfurization in coke gas is far below the 20mg/m of prior art
3below; Be provided with regeneration at regeneration unit top after, washing tail gas unit comprises two portions: one is meet the new water of recirculated water balance or doctor solution sends into washing tail gas unit inner upper through piping, two be spray new water or doctor solution carry out tail gas desulfurization washing after become washings after again send into washing tail gas unit inner upper by recycle pump and pipeline again, carry out dual tail gas desulfurization washing by the new water of high-pressure atomization lance ejection or doctor solution or jet washing liquid, circular flow like this realizes the tower desulfurization regeneration work of one of coke gas.
Description
Technical field
The utility model belongs to the technical field of Coal Chemical Industry coking desulfurization, is specifically related to a kind of coke gas desulfurization regeneration integrated tower.
Background technology
Current existing iron and steel enterprise will perform more strict Air Pollutant Emission limit value, and the coking production enterprise in iron and steel enterprise is in the urgent need to finding suitable, efficient, economic reduction of discharging Treatment process.
Traditional sulfur removal technology device of coke gas is relatively complicated, as shown in Figure 3, primarily of compositions such as thionizer, regenerator column, reactive tanks, its technical process the thick coke gas from a upper operation is entered through gas entry desulfurization lean solution counter current contact that thionizer bottom and tower top spray wash hydrogen sulfide in coke gas, and the clean coke gas removing hydrogen sulfide is sent to subsequent processing from the gas exit of tower top side; The sulfur removing pregnant solution flowed out from the sulfur removing pregnant solution outlet of thionizer bottom enters reactive tank through liquid seal trough by pipeline, pumps enter regenerator column regeneration after supplementing dropping catalyst solvent with rich solution recycle pump; The compressed gas inlet of pressurized air come from compressed air station injector and sulfur removing pregnant solution by regenerator column bottom regenerator column sulfur removing pregnant solution entrance and flow in regenerator column oxidation regeneration carried out to sulfur removing pregnant solution; Desulfurization lean solution after regeneration carries out spray desulfurization through regulator of level and outside connecting pipeline from the spray structure flowing into position, thionizer middle and upper part from the desulfurization lean solution outlet on regenerator column top; The sulphur foam that regenerator column tower top floatingly selects flows out from sulphur foam outlet and is sent to subsequent processing.
Traditional sulfur removal technology of coke gas, although can environmental pollution be alleviated, but also there is some weak point following: one is complex structure, whole desulphurization system main equipment quantity is many, as thionizer, regenerator column, reactive tank etc., floor space is large, and the wide distance of install pipeline, adds equipment investment cost; Two is complex process, and what regenerator column adopted is that pressurized air carries out the technique of oxidation regeneration to sulfur removing pregnant solution, must set up high-pressure air station like this, add equipment investment cost equally; Three is because equipment volume is large, type kind is many, pipelining distance, various losses in desulfurization operation process are all increased, as calorific loss, catalyst attrition etc., desulfuration efficiency decline, sweetening effectiveness certainly will be caused thorough, add production run cost, reduce efficiency.Tail gas particularly after regeneration is directly disposed to air without the regeneration tail gas diffusion mouth of any process from regenerator column tower top, and secondary pollution is serious, makes a very bad impression to environment.In addition, in current coke gas use the ature of coal of feed coal to have the trend of high sulfur-bearing, the sulphur content in coke gas must be caused to increase, therefore in coke gas sweetening process in the urgent need to adopting efficient desulfurization regeneration equipment.
Utility model content
The object of utility model is: for solving the problem, the utility model is for the deficiency of existing traditional sulfur removal technology technology, provide a kind of coke gas desulfurization regeneration integrated tower that effectively can overcome above-mentioned deficiency, solve the problem, its objective is that floor space is little, pipelining apart from short, reduce equipment investment cost, simplify production process, reduce equipment energy consumption, improve desulfuration efficiency, avoid secondary environmental pollution.
Technical scheme: for achieving the above object, the utility model adopts following technical scheme:
Coke gas desulfurization regeneration integrated tower, it is characterized in that structure of the present utility model adopts vertical one tower structure, be followed successively by washing tail gas unit, regeneration unit, desulfurization unit, rich solution storage reaction unit after desulfurization after regeneration from top to bottom, above-mentioned 4 unit optimization design integrations are formed an entirety, its annexation is that internal structure is by rich solution storage reaction unit and desulfurization unit after segmentation desulfurization at the bottom of inner tower, by inner elliptical shape end socket segmentation desulfurization unit and regeneration unit, external structure is provided with the rear washing tail gas unit of regeneration.
Coke gas desulfurization regeneration integrated tower, is characterized in that the skirt part of tower bottom of the present utility model is designed to rich solution storage reaction unit after desulfurization, by the annular seal arranged, so that rich solution solution after storing desulfurization, rich solution solution after rich solution solution circulation pump directly extracts desulfurization at the bottom of tower under the power-assisted of swirl injection pipe also presses people to be placed in each self-priming oxidation regeneration injector of tower top, injector suction air or oxygen enrichment is utilized to carry out oxidation regeneration to make rich solution solution enter regeneration unit through guide wire injection, after regenerative response, isolated sulphur foam is from flowing into sulphur foam regeneration tank, the desulfurization lean solution produced flows into the spray equipment on hypomere desulfurization unit top certainly through being arranged on the regulator of level in regeneration unit and the connecting pipeline of outside, in spray equipment bottom, high-pressure atomization spray gun is installed, desulfurization lean solution is implemented to the atomizing spray of coke gas by the nozzle of high-pressure atomization spray gun, coke gas is entered by side bottom desulfurization unit, sailed against the current by desulfurization unit bottom after the distribution of gas flow distribution device, by after the light porcelain packing of 4 layers or full porcelain filling layer and corresponding gas-liquid distributor in up process, with descending desulfurization lean solution solution convection current, after hydrogen sulfide content in washing absorption coke gas, become sulfur removing pregnant solution flow into bottom, and for keeping the cold operation of desulfurization whole process, arrange in 4 layers of packing layer support of desulfurization unit and corresponding coil tube type Aftercooling device is installed, hydrogen sulfide in coal gas reduces along with temperature, be desulfurized ammonia in lean solution to absorb, condensation, cohesion enters in the rich solution after desulfurization together afterwards, make the hydrogen sulfide content in the coke gas after desulfurization far below below the 20mg/ m3 of prior art, after flowing into the desulfurization of bottom, rich solution flows into rich solution storage reaction unit after the desulfurization of bottom after annular seal isolation coal gas, and then to be pumped to by rich solution solution after desulfurization at the bottom of tower to be placed in spray in each self-priming oxidation regeneration injector of tower top, through guide wire with rich solution solution circulation pump carry out oxidation regeneration in regeneration unit, after tail gas after regeneration enters into the regeneration that regeneration unit top connects, washing tail gas unit carries out washing tail gas desulfurization, and washing tail gas process comprises two portions: one is meet the new water of whole desulfurizing technology system recirculated water balance or doctor solution is sent into washing tail gas unit inner upper through piping, carried out tail gas desulfurization washing by the new water of high-pressure atomization lance ejection or doctor solution, two be spray new water or doctor solution carry out tail gas desulfurization washing after become washings, then washings is again sent into washing tail gas unit inner upper by recycle pump and pipeline, is carried out again tail gas desulfurization washing by high-pressure atomization lance ejection washings, and circular flow like this achieves the tower desulfurization regeneration work of one of coke gas desulfurization and regeneration.
As optimization: in desulfurization unit described in the utility model, because adopting with ammonia is that alkali source carries out the technological process of liquid phase catalytic oxidation desulfurization absorption reaction to the cooking gas containing hydrogen sulfide sulfides, exothermic process is belonged in chemical engineering thermodynamics, in order to keep the cold operation of desulfurization whole process, arrange in 4 layers of packing layer support of desulfurization unit and corresponding coil tube type circulation Aftercooling device is installed, recycle heat for exothermic process in sweetening process cools, desulfuration efficiency is made to obtain good raising, make the hydrogen sulfide content in the coke gas after desulfurization far below below the 20mg/ m3 of prior art.
As further optimization: after regeneration described in the utility model, washing tail gas unit is connected with the rear washing tail gas unit of regeneration, after regeneration, the discharge outlet of tail gas is the entrance of the rear washing tail gas unit of regeneration, the rear tail gas of regeneration enters washing tail gas unit after regeneration through discharge outlet and carries out washing tail gas desulfurization, washing tail gas process comprises two portions: one is meet the new water of whole desulfurizing technology system recirculated water balance or doctor solution sends into washing tail gas unit inner upper through piping, tail gas desulfurization washing is carried out by the new water of high-pressure atomization lance ejection or doctor solution, two be spray new water or doctor solution carry out tail gas desulfurization washing after become washings, then washings again send into washing tail gas unit inner upper by recycle pump and pipeline, undertaken again by high-pressure atomization lance ejection washings tail gas desulfurization washing, ammonia in all recyclable regeneration tail gas of above-mentioned two portions or the sulphur foam carried secretly, the washings absorbing ammonia overflows to regeneration unit by overflow spout and makes full use of further.
As further optimization: the high-pressure atomization spray tip that after regeneration described in the utility model, washing tail gas unit and desulfurization unit use is that average spray particle size is about 100 μm, and the spray particle size of general desulfurization nozzle is about 1000-5000 μm, the specific surface area of mist unit spray liquid is more than 400 times of the latter, just can realize volatilization and be cooled to state of saturation after tail gas enters washing tail gas unit after regeneration in the several seconds; Drastically increase the Absorption Desulfurization efficiency of new water or doctor solution, only need the vapour-liquid ratio of 0.1-0.5L/m3 just can realize desulfurization up to standard, original sweet gas liquor ratio also can reduce, and decreases internal circulating load.
Beneficial effect: the utility model is by being changed to washing tail gas unit after regeneration, regeneration unit, desulfurization unit by existing traditional sulfurization process facilities, rich solution storage reaction unit optimization forms an overall structure design after desulfurization, and setting is provided with corresponding coil tube type Aftercooling device in 4 layers of packing layer support of desulfurization unit, make desulfuration efficiency obtain good raising, the hydrogen sulfide content after desulfurization in coke gas is far below below the 20mg/ m3 of prior art, be provided with regeneration at regeneration unit top after, washing tail gas unit comprises two portions: one is meet the new water of recirculated water balance or doctor solution sends into washing tail gas unit inner upper through piping, two be spray new water or doctor solution carry out tail gas desulfurization washing after become washings after again send into washing tail gas unit inner upper by recycle pump and pipeline again, by the new water of high-pressure atomization lance ejection or doctor solution, or jet washing liquid carries out dual tail gas desulfurization washing, circular flow like this achieves the tower desulfurization regeneration work of one of coke gas, solve the secondary pollution problem that the tail gas of sweetening effectiveness of the prior art not thoroughly and after regeneration directly discharges from tower top, and in the urgent need to adopting efficient desulfurization regeneration plant issue.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is washing tail gas modular construction schematic diagram after regeneration of the present utility model;
Fig. 3 is thionizer and the regenerator column assembly structure schematic diagram of traditional sulfur removal technology.
In figure: 1-sulfur removing pregnant solution exports, 2-gas entry, 3-filler, 4-gas-liquid distributor, 5-water cooler entrance, 6-cooler outlet, 7-filler support, 8-desulfurization lean solution entrance and spray equipment, 9-regulator of level, 10-desulfurization lean solution exports, 11-screen, 12-injector guide wire, 13-sulphur foam regeneration tank, 14-tower top rich solution house steward, 15-washings outlet A, washing tail gas unit after 16-regeneration, 17-washings outlet B, 18-oxidation regeneration injector, 19-sluicing pipe entrance, 20-sluicing pipe, 21-froth breaking pipe, 22-sulphur foam outlet, 23-regeneration unit, 24-washings entrance, 25-gas exit, 26-flutters mist device, 27-nozzle and flutter mist sluicing pipe, 28-desulfurization unit, 29-gas flow distribution device, 30-tower base plate, the fluid-tight of 31-ring-type, rich solution storage reaction unit after 32-desulfurization, 33-disappears foam catalyzer shower nozzle, 34-swirl injection pipe, 35-rich solution storage reaction groove, 36-rich solution recycle pump, 37-detergent circulator, the new water of 38-or doctor solution shower nozzle, 39-washings shower nozzle, 40-washings baffle plate, 41-regeneration tail gas, 42-variable valve, 43-oxygen enrichment house steward, the new water of 44-or doctor solution, 45-oxygen enrichment, rich solution after 46-desulfurization, 47-liquid seal trough, 48-thionizer, 49-regenerator column regeneration tail gas diffusion mouth, 50-regenerator column, 51-compressed air station injector, 52-compressed air inlet, 53-regenerator column sulfur removing pregnant solution entrance, 54-reactive tank.
Embodiment
Below in conjunction with Figure of description, the utility model is described in detail, but it should be noted that enforcement of the present utility model is not limited to following embodiment.
As Figure 1-Figure 2, coke gas desulfurization regeneration integrated tower, the structure of this tower adopts vertical one tower structure, be followed successively by washing tail gas unit 16, regeneration unit 23, desulfurization unit 28, rich solution storage reaction unit 32 after desulfurization after regeneration from top to bottom, its interconnected relationship is that tower internal structure is by rich solution storage reaction unit 32 and desulfurization unit 28 after inner tower base plate segmentation desulfurization, by inner elliptical shape end socket segmentation desulfurization unit 28 and regeneration unit 23, external structure is provided with bottom the rear washing tail gas unit 16 of regeneration at regeneration unit 23 top.
Enter in the desulfurization regeneration process of coke gas desulfurization regeneration integrated tower gas entry 2 gas temperature should by remain on 25-35Co and enter regeneration unit 23 desulfurization after rich solution temperature should control at 35-40Co.Otherwise, when after desulfurization, rich solution temperature is higher, the ammonia dividing potential drop on liquid level will be increased, desulfuration efficiency will decline with the reduction of ammonia content in doctor solution, but too low the carrying out also being unfavorable for regenerative response of the temperature of doctor solution, therefore, the gas temperature of gas entry 2 remain on 25-35Co and enter regeneration unit 23 desulfurization after rich solution temperature control at 35-40Co.
The rear washing tail gas unit 16 of regeneration exports A15, washings outlet B17, detergent circulator 37, new water or doctor solution shower nozzle 38, washings shower nozzle 39, washings baffle plate 40, regeneration tail gas 41, new water or doctor solution 44 by washings and forms.
New water or doctor solution shower nozzle 38, washings shower nozzle 39 are successively set on the inner upper of washing unit 16, the bottom of washing unit 16 completes and is respectively arranged with washings outlet A15, washings outlet B17, detergent circulator 37 is arranged on separately regeneration unit 23 top outer and exports A15 respectively with washings and be connected with washings shower nozzle 39 through piping, regeneration tail gas 41 is provided with washings baffle plate 40 above ingress, washings baffle plate 40 can play gas-liquid distributor function, also can play regeneration tail gas 41 rise in shunting action.
After regeneration, the flow process of washing tail gas unit 16 is such:
After regeneration tail gas 41 enters into regeneration after washing tail gas unit 16, with send into washing tail gas unit 16 inner upper through piping, met by meeting of spraying of new water or the doctor solution shower nozzle 38 new water that recirculated water balances or doctor solution 44 adverse current, ammonia in regeneration tail gas 41 or the sulphur foam carried secretly, by new water or doctor solution 44 washing absorption, after absorbing ammonia or the sulphur foam carried secretly, new water or doctor solution 44 fall after becoming washings, drop in washing tail gas unit 16 lower annular groove after the shunting of washings baffle plate 40 in dropping process; Part washings exports A15 through washings, again send into washing tail gas unit 16 inner upper by detergent circulator 37 through piping, sprayed by washings shower nozzle 39 after, again circulation cleaning is carried out to regeneration tail gas 41, another part washings also can be passed through washings outlet B17, delivered to the sluicing pipe entrance 19 at regeneration unit 23 top by pipeline enters regeneration unit 23 and makes full use of further.
Regeneration unit 23 exports 10 by regulator of level 9, desulfurization lean solution, screen 11, injector guide wire 12, sulphur foam regeneration tank 13, tower top rich solution house steward 14, oxidation regeneration injector 18, sluicing pipe entrance 19, sluicing pipe 20, froth breaking pipe 21, sulphur foam outlet 22, variable valve 42, oxygen enrichment house steward 43, new water or doctor solution 44, oxygen rich gas 45, rich solution 46 forms after desulfurization.
The flotation unit of sulphur foam after regeneration unit 23 mainly regenerates, its top expanded section is the sulphur foam regeneration tank 13 of annular, and be arranged on the inner upper of regeneration unit 23, and be communicated with the lower inside of the regeneration unit 23 as solution tank, connectivity part is provided with overflow port, screen 11 is arranged on middle part as regeneration unit 23 inside of solution tank and lower portion, screen 11 has makes doctor solution and pressurized air, or with mixed gas equally distributed function on the cross section face of regeneration unit 23 of oxygen rich gas 45 and regeneration tail gas 41, the sluicing pipe 20 be connected with sluicing pipe entrance 19 is arranged on above sulphur foam regeneration tank 13, regeneration unit 23 top is provided with froth breaking pipe 21 and passes in regeneration unit 23 and prevent foam too high, regeneration unit 23 outside is provided with regulator of level 9 and is communicated with regeneration unit 23 by gas-liquid equilibrium pipe, regulate regeneration unit 23 liquid level, promote that gas-liquid is separated further.
Regeneration unit 23 top is provided with a set of oxidation regeneration injector 18, is connected with tower top rich solution house steward 14, oxygen enrichment house steward 43 respectively, oxygen enrichment house steward 43 is connected with the variable valve on pipeline, the ratio of mixture of the adjustable oxygen rich gas 45 of variable valve 42 and regeneration tail gas 41, to make full use of regeneration tail gas 41 and remaining oxygen carries out the bubbling flotation of the suspension sulphur in doctor solution and the oxidation regeneration of doctor solution, the sulphur foam of generation sends into subsequent processing from sulphur foam outlet 22.
After rich solution 46 is pumped to tower top rich solution house steward 14 by rich solution recycle pump 36 after desulfurization, deliver to oxidation regeneration injector 18 through piping, contacted with air by oxidation regeneration injector 18 or contact with the mixed gas of regeneration tail gas 41 with oxygen rich gas 45, then sprayed by injector guide wire 12 and carry out oxidation regeneration in regeneration unit 23, injector guide wire 12 one end is connected with bottom oxidation regeneration injector 18, and the other end extends downward regeneration unit 23 inner bottom part.
Sulphur foam outlet 22 is arranged on the bottom of sulphur foam regeneration tank 13, and the desulfurization lean solution outlet 10 after regeneration is arranged on outside in the middle part of regeneration unit 23, and the outlet of regeneration tail gas 41 is arranged on regeneration unit 23 crown center position.
The flow process of regeneration unit 23 is such:
After desulfurization rich solution 46 by rich solution recycle pump 36 after line pump to tower top rich solution house steward 14, oxidation regeneration injector 18 is delivered to through piping, negative pressure is formed by inner to contact with air of oxidation regeneration injector 18, the mixed gas of oxygen rich gas 45 and regeneration tail gas 41 is introduced oxidation regeneration injector 18 inside, then sprayed by injector guide wire 12 and carry out oxidation regeneration with bottom solution in regeneration unit 23, sulphur foam bubbling in doctor solution is made to increase, float on top expanded section, the sulphur foam formed overflows gravity flow through overflow port and enters sulphur foam regeneration tank 13, heating steam coil pipe is provided with in it, sulphur foam hot defecation in groove is separated, clear liquid after separation, namely the desulfurization lean solution after regeneration, export 10 by desulfurization lean solution and be sent to desulfurization unit 28 through pipeline, sulphur foam sends into subsequent processing from sulphur foam outlet 22 through foam pump.
Desulfurization unit 28 by gas entry 2, filler 3, gas-liquid distributor 4, water cooler entrance 5, cooler outlet 6, filler support 7, desulfurization lean solution entrance and spray equipment 8, washings entrance 24, gas exit 25, flutter mist device 26, nozzle and flutter mist sluicing pipe 27, gas flow distribution device 29, tower base plate 30, desulfurization after rich solution 46 form.
Desulfurization unit 28 sets gradually as tower base plate 30 from bottom to top, gas entry 2, gas flow distribution device 29, gas-liquid distributor 4, filler support 7, water cooler entrance 5, cooler outlet 6, filler 3, gas-liquid distributor 4, filler support 7, water cooler entrance 5, cooler outlet 6, filler 3, gas-liquid distributor 4, filler support 7, water cooler entrance 5, cooler outlet 6, filler 3, gas-liquid distributor 4, filler support 7, water cooler entrance 5, cooler outlet 6, filler 3, desulfurization lean solution entrance and spray equipment 8, nozzle and flutter mist sluicing pipe 27, flutter mist device 26, gas exit 25 and washings entrance 24.
Desulfurization lean solution entrance and spray equipment 8 are made up of desulfurization lean solution entrance and the high-pressure atomization spray gun in different radii multilayer annular configuration, for ensureing suitable specific liquid rate and liquid-gas ratio, spray gun is in falling pagoda shape, nozzle is that average spray particle size is about 100 μm, and the spray particle size of general desulfurization nozzle is about 1000-5000 μm, the specific surface area of mist unit spray liquid is more than 400 times of the latter; The top of spray equipment and flutter and to be provided with shared nozzle on rear side of mist device 26 and to flutter mist sluicing pipe 27 for spray equipment 8 and the cleaning of flutterring mist device 26.
Desulfurization unit 28 lower outside is provided with gas entry 2, the arranged outside of top opposite side has gas exit 25, inner filler 3 is set to 4 layers usually, its objective is gas, the liquid two-phase skewness in packing layer of avoiding wall stream effect to cause, causes mass transfer assimilated efficiency is declined.Arrange in 4 layers of packing layer support and corresponding coil tube type circulation Aftercooling device is installed, cooling fluid is by water cooler entrance 5, cooler outlet 6 cools for the recycle heat of desulfurization exothermic process, utilize gas flow distribution device 29 to realize coal gas to be uniformly distributed in whole desulfurization unit 28, carry out adverse current by 4 layers of filler 3 layers and the gas-liquid distributor 4 again with distributed function and the spray from desulfurization lean solution entrance and spray equipment 8 to mix and contact, after hydrogen sulfide in abundant absorption coal gas, doctor solution is turned into the back taper circular hole of rich solution 46 through tower base plate middle part after desulfurization, rich solution storage reaction unit 32 after inflow desulfurization, coal gas order up through 4 layers of filler 3 layers and there is distributed function again the Multistage desulfuration of gas-liquid distributor 4 after, subsequent processing is sent into by gas exit 25 after flutterring the water smoke that mist device 26 removes in coal gas.
Gas-liquid distributor 4 is to ensure that good gas-liquid distributes and avoids the wall stream effect of desulfurization unit 28 packing tower, liquid under the filler stream of upper strata is through gas-liquid distributor 4, after redistribution, spray is on lower floor's filler, namely the bad Distribution Phenomena of liquid is overcome, ensure less gas resistance simultaneously, namely ensure coal gas and the good mass transfer effect of doctor solution; Filler 3 is selected the full porcelain filling with enough packing specific areas or light porcelain packing, is being ensured, outside good liquid initial distribution, to require that packed height is generally no more than 6M.And the effect of filler be cause gas, liquid two-phase fully contact thus realize alternate heat, matter transmit primary member.Desulfurization lean solution is distributed on packing layer after being sprayed by spray structure, flows down along filling surface by action of gravity, and coke gas then passes the gap of filler under pressure difference promotes, and flows to the tower top the other end by tower bottom one end.Gas, liquid contact on the wetted surface of filler, and the phase interface of the alternate mass transfer absorption process of gas, liquid two normally between the liquids and gases of filling surface carries out.
The flow process of desulfurization unit 28 is such:
Coke gas enters desulfurization unit 28 by gas entry 2, utilize gas flow distribution device 29 to realize coal gas to be uniformly distributed in whole desulfurization unit 28, carry out adverse current by 4 layers of filler 3 layers and the gas-liquid distributor 4 again with distributed function and the spray from desulfurization lean solution entrance and spray equipment 8 to mix to contact and wash, under the effect of catalyzer by the hydrogen sulfide absorption in coal gas in doctor solution, doctor solution is turned into the back taper circular hole of rich solution 46 through tower base plate middle part after desulfurization, rich solution storage reaction unit after inflow desulfurization, coal gas order up through 4 layers of filler 3 layers and there is distributed function again the Multistage desulfuration of gas-liquid distributor 4 after, subsequent processing is sent into by gas exit 25 after flutterring the water smoke that mist device 26 removes in coal gas.
After desulfurization, rich solution storage reaction unit 32 is made up of rich solution 46 after sulfur removing pregnant solution outlet 1, ring-type fluid-tight 31, the foam catalyzer shower nozzle 33 that disappears, swirl injection pipe 34, rich solution storage reaction groove 35, rich solution recycle pump 36, desulfurization.After desulfurization, rich solution storage reaction unit 32 is based on utilizing the feature that desulfurization regeneration tower diameter is large, the rich solution storage reaction groove with reactive tank function designed by skirt part at the bottom of tower, its interconnected relationship the tower base plate 30 of desulfurization unit 28 and desulfurization regeneration tower sole plate is coupled together by ring-type fluid-tight 31, and isolate desulfurization unit 28, coal gas is avoided to enter rich solution storage reaction unit 32, rich solution storage reaction unit 32 outer upper is provided with the foam catalyzer shower nozzle 33 that disappears, outer lower portion is provided with swirl injection pipe 34, the foam catalyzer shower nozzle 33 that disappears will promote that the catalyst auto-continued addition of chemical absorption reaction is on a small quantity in rich solution 46 after desulfurization, and there is the effect eliminating foam simultaneously, swirl injection pipe 34 have the dilution of eddy flow mixing and shearing make its desulfurization after rich solution 46 family dependant aquation be convenient to the pumping of rich solution recycle pump 36.
After desulfurization, the flow process of rich solution storage reaction unit 32 is such:
After desulfurization in desulfurization unit 28 after desulfurization, rich solution 46 is by ring-type fluid-tight 31 rich solution storage reaction unit 32 after flowing into desulfurization, the foam catalyzer shower nozzle 33 that disappears will promote that the catalyzer of chemical absorption reaction to join after desulfurization in rich solution 46, and then with rich solution recycle pump 36 by rich solution 46 solution after the desulfurization in the rich solution storage reaction groove 35 at the bottom of tower, under the power-assisted of swirl injection pipe 34, deliver in each self-priming oxidation regeneration injector 18 after being pumped into the tower top rich solution house steward 14 being placed in tower top again, circular flow like this achieves the tower desulfurization regeneration work of one of coke gas.
The implementation flow process of coke gas desulfurization regeneration integrated tower is such:
As shown by the arrows in Figure 1, coke gas enters desulfurization unit 28 by gas entry 2, utilize gas flow distribution device 29 to realize coal gas to be uniformly distributed in whole desulfurization unit 28, carry out adverse current by 4 layers of filler 3 layers and the gas-liquid distributor 4 again with distributed function and the spray from desulfurization lean solution entrance and spray equipment 8 to mix to contact and wash, under the effect of catalyzer by the hydrogen sulfide absorption in coal gas in doctor solution, doctor solution is turned into the back taper circular hole of rich solution 46 through tower base plate middle part after desulfurization, rich solution storage reaction unit after inflow desulfurization, coal gas order up through 4 layers of filler 3 layers and there is distributed function again the Multistage desulfuration of gas-liquid distributor 4 after, subsequent processing is sent into by gas exit 25 after flutterring the water smoke that mist device 26 removes in coal gas.After desulfurization in desulfurization unit 28 after desulfurization, rich solution 46 is by ring-type fluid-tight 31 rich solution storage reaction unit 32 after flowing into desulfurization, the foam catalyzer shower nozzle 33 that disappears will promote that the catalyzer of chemical absorption reaction to join after desulfurization in rich solution 46, and then with rich solution recycle pump 36 by rich solution 46 solution after the desulfurization in the rich solution storage reaction groove 35 at the bottom of tower, under the power-assisted of swirl injection pipe 34, deliver in each self-priming oxidation regeneration injector 18 after being pumped into the tower top rich solution house steward 14 being placed in tower top again, negative pressure is formed by inner to contact with air of oxidation regeneration injector 18, the mixed gas of oxygen rich gas 45 and regeneration tail gas 41 is introduced oxidation regeneration injector 18 inside, then sprayed by injector guide wire 12 and carry out oxidation regeneration with bottom solution in regeneration unit 23, sulphur foam bubbling in doctor solution is made to increase, float on top expanded section, the sulphur foam formed overflows gravity flow through overflow port and enters sulphur foam regeneration tank 13, heating steam coil pipe is provided with in it, sulphur foam hot defecation in groove is separated, clear liquid after separation, namely the desulfurization lean solution after regeneration, export 10 by desulfurization lean solution and be sent to desulfurization unit 28 through pipeline, sulphur foam sends into subsequent processing from sulphur foam outlet 22 through foam pump.After regeneration tail gas 41 enters into regeneration after washing tail gas unit 16, with send into washing tail gas unit 16 inner upper through piping, met by meeting of spraying of new water or the doctor solution shower nozzle 38 new water that recirculated water balances or doctor solution 44 adverse current, ammonia in regeneration tail gas 41 or the sulphur foam carried secretly, by new water or doctor solution 44 washing absorption, after absorbing ammonia or the sulphur foam carried secretly, new water or doctor solution 44 fall after becoming washings, drop in washing tail gas unit 16 lower annular groove after the shunting of washings baffle plate 40 in dropping process; Part washings exports A15 through washings, again send into washing tail gas unit 16 inner upper by detergent circulator 37 through piping, sprayed by washings shower nozzle 39 after, again circulation cleaning is carried out to regeneration tail gas 41, another part washings also can be passed through washings outlet B17, the sluicing pipe entrance 19 of being delivered to regeneration unit 23 top by pipeline enters regeneration unit 23 and makes full use of further, and circular flow like this achieves the tower desulfurization regeneration work of one of coke gas.
Claims (4)
1. coke gas desulfurization regeneration integrated tower, it is characterized in that: tower structure adopts vertical one tower structure, set gradually as regenerating rear washing tail gas unit (20) from top to bottom, regeneration unit (38), desulfurization unit (40), after desulfurization, rich solution storage reaction unit (44) optimization design becomes an entirety, its annexation is that internal structure is by rich solution storage reaction unit (44) and desulfurization unit (40) after inner tower base plate (43) segmentation desulfurization, by inner elliptical shape end socket segmentation desulfurization unit (40) and regeneration unit (38), external structure is provided with the rear washing tail gas unit (20) of regeneration.
2. coke gas desulfurization regeneration integrated tower according to claim 1, it is characterized in that: be connected with the rear washing tail gas unit (20) of regeneration on regeneration unit (38) top, after regenerating, the discharge outlet of tail gas is the entrance of the rear washing tail gas unit (20) of regeneration, and the rear tail gas of regeneration enters washing tail gas unit (20) after regeneration through discharge outlet and carries out washing tail gas desulfurization.
3. coke gas desulfurization regeneration integrated tower according to claim 1, it is characterized in that: arrange in the inner filler support (5) for supporting filler (7) of desulfurization unit (40) and be provided with corresponding coil tube type circulation Aftercooling device, the recycle heat for exothermic process in sweetening process cools.
4. coke gas desulfurization regeneration integrated tower according to claim 2, is characterized in that: after regeneration, the washing tail gas process of washing tail gas unit (20) comprises two portions: one is meet the new water of whole desulfurizing technology system recirculated water balance or doctor solution (21) is sent into washing tail gas unit (20) inner upper after regeneration through piping, carried out tail gas desulfurization washing by the new water of high-pressure atomization lance ejection or doctor solution (21); Two is become washings after the new water that sprays or doctor solution (21) carry out tail gas desulfurization washing, washing tail gas unit (20) inner upper after then washings sends into regeneration again by detergent circulator (15) and pipeline, to be carried out again tail gas desulfurization washing by high-pressure atomization lance ejection washings.
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| CN201520144013.6U CN204529775U (en) | 2015-03-15 | 2015-03-15 | Coke gas desulfurization regeneration integrated tower |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520144013.6U CN204529775U (en) | 2015-03-15 | 2015-03-15 | Coke gas desulfurization regeneration integrated tower |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104650993A (en) * | 2015-03-15 | 2015-05-27 | 辽宁圣赫机械制造成套设备有限公司 | Cooking gas desulfurization and regeneration integrated tower |
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2015
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104650993A (en) * | 2015-03-15 | 2015-05-27 | 辽宁圣赫机械制造成套设备有限公司 | Cooking gas desulfurization and regeneration integrated tower |
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