CN1224633A - Method for desulfurizing flue gas of fluidized bed furnace - Google Patents
Method for desulfurizing flue gas of fluidized bed furnace Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 230000003009 desulfurizing effect Effects 0.000 title claims abstract description 28
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims description 9
- 239000003546 flue gas Substances 0.000 title claims description 9
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 40
- 230000023556 desulfurization Effects 0.000 claims abstract description 31
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 29
- 238000002309 gasification Methods 0.000 claims abstract description 27
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 36
- 239000011575 calcium Substances 0.000 claims description 22
- 229910052717 sulfur Inorganic materials 0.000 claims description 20
- 239000011593 sulfur Substances 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 19
- 239000000446 fuel Substances 0.000 claims description 18
- 239000012530 fluid Substances 0.000 claims description 17
- 239000005864 Sulphur Substances 0.000 claims description 16
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 8
- 239000000292 calcium oxide Substances 0.000 claims description 8
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 abstract description 19
- 235000008733 Citrus aurantifolia Nutrition 0.000 abstract description 16
- 235000011941 Tilia x europaea Nutrition 0.000 abstract description 16
- 239000004571 lime Substances 0.000 abstract description 16
- 239000010459 dolomite Substances 0.000 abstract description 9
- 229910000514 dolomite Inorganic materials 0.000 abstract description 9
- 239000010802 sludge Substances 0.000 abstract 1
- 239000003245 coal Substances 0.000 description 18
- 239000002245 particle Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 230000018044 dehydration Effects 0.000 description 7
- 238000006297 dehydration reaction Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000006228 supernatant Substances 0.000 description 5
- 238000000205 computational method Methods 0.000 description 4
- 230000004927 fusion Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000003610 charcoal Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 3
- 235000019738 Limestone Nutrition 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- -1 and simultaneously Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 2
- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 239000003473 refuse derived fuel Substances 0.000 description 2
- 239000004449 solid propellant Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- XGCDHPDIERKJPT-UHFFFAOYSA-N [F].[S] Chemical compound [F].[S] XGCDHPDIERKJPT-UHFFFAOYSA-N 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000011499 joint compound Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003027 oil sand Substances 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 239000002006 petroleum coke Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
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Images
Abstract
A method of in-furnace desulfurization is provided, which can improve desulfurization efficiency (utilization rate of a desulfurizing agent), and at the same time, can reduce the ash discharge amount of a combustion boiler, a gasification furnace, etc. having in-furnace desulfurization equipment, and further, can promote effective utilization of lime and dolomite resources. The method is characterized in that raw concrete sludge is used as a desulfurizing agent in a fluidized bed furnace such as a normal-pressure fluidized bed combustion boiler, a fluidized bed gasification furnace or a fluidized bed partial gasification furnace.
Description
The present invention relates to a kind of method of the flue gas that produces in the fluid bed furnace being carried out desulfurization, relate in particular to the remainder of a kind of utilization employed growing concrete in building, building industry etc., the perhaps growing concrete mud that produces in cleaning concrete lorry process is used as the desulfurizing agent of AFBC boiler, fluidized-bed gasification furnace or fluid bed partial gasification stove and the method for carrying out desulfurization.
All contain more Sulfur in fossil fuel such as oil, coal or trade waste, the municipal refuse the like waste, be in the combustion furnace, gasification furnace of fuel with the above-mentioned substance, the oxysulfide (SO of the pernicious gas that must generate, sulphurous acid gas, sulfuric acid gas etc. owing to the burning of sulphur
x), concentration be reduced to environmental standard up to specification, gas could be discharged then.Originally, employed sulfur method roughly was divided into following two kinds in above-mentioned stove:
(1) desulfuration in furnace method: desulfurizing agent is put in the stove, removed oxysulfide by the absorption of desulfurizing agent.Usually with lime or dolomite as desulfurizing agent, desulfurizing agent becomes the gypsum that can be used effectively through behind the absorption reaction.Main this method of using is come desulfurization in the fluid bed furnace.
(2) exhaust gas desulfurization method: be provided with the contact tower (groove) of desulfurizing agent and flue gas in the flue behind stove, by absorption or suction-operated and the oxysulfide in the flue gas is removed.In the method, different and use different desulfurizing agents at the kind of want desulfurization.
Yet, in above-mentioned desulfuration in furnace method, be very low as the utilization rate of employed lime of desulfurizing agent or dolomite.For example, reach desulfurization degree and be 90% when above, the utilization rate of lime: in the fluid-bed combustion boiler of normal pressure bubbling type, be 15～20%; In circulation fluidized-bed combustion boiler, be 25～35%.Therefore, if fully remove sulphur content in the fuel, the desulfurization dosage that needs to drop into is 3～6 times of sulfur content (rub unlike) in the fuel.For average grain diameter is lime about 200 microns, and only desulphurization reaction takes place on its surface, and the inside of lime particle does not react, so there are many calcium that do not utilize (not reacting).For addressing the above problem, consider to use the big such lime of particle diameter ratio little, that can utilize surface area, but refinement lime particle diameter can cause the increase expense, if the lime particle that drops into is too little, can be taken out of outside the stove by air-flow, the utilization rate of lime remains very low like this.
On the other hand, using desulfurizing agent with poor efficiency, be in operation at fluid-bed combustion boiler, gasification furnace etc., is not that a large amount of desulfurizing agents are not utilized, and, come processed residue discharge rate to increase as ash.Lime or dolomite all are important raw material resourceses, utilize this respect from resources effective, and hope waits with discarded object and replaces above-mentioned substance.
The present invention proposes under such situation, i.e. the present invention uses concrete mud, replaces in the desulfuration in furnace method as desulfurizing agent used lime or dolomite, thereby has improved desulfuration efficiency (utilization rate of desulfurizing agent).Simultaneously, the objective of the invention is to reduce the ash discharge amount of burning boiler with desulfuration in furnace equipment, gasification furnace etc., thereby promote lime, dolomite resources effective to utilize.
For achieving the above object, the inventor has carried out repeatedly research, found that: utilize a kind of in building industry, building industry etc. employed concrete remainder, the perhaps concrete mud that in cleaning concrete lorry process, produces, be used as the desulfurizing agent of fluid bed furnace, just can reach above-mentioned purpose effectively.The present invention just finishes based on such discovery.
That is, the invention provides a kind of method that the flue gas that produces in AFBC boiler, fluidized-bed gasification furnace or the fluid bed partial gasification stove is carried out desulfurization, it is characterized in that using growing concrete mud as desulfurizing agent.
Below, the present invention is described in detail.
The invention is characterized in and use concrete mud as the desulfurizing agent in AFBC boiler, fluidized-bed gasification furnace or the fluid bed partial gasification stove.Concrete mud generally is the method for separating by the wet type screening, and from concrete remainder, perhaps parting sand, aggregate obtain in the concrete mud that produces in the cleaning concrete lorry process.Because the concrete mud that obtains by the way is the material of pulpous state, thus usually, utilize concentrating agents etc. via precipitation, concentrate engineering etc., be separated into argillaceous solid content promptly dewater mud and upper strata primary water.Now, such dehydration mud major part is all handled as industrial waste, and simultaneously, supernatant liquid goes out of use through adjusting pH value (acid-base value) back.
In the present invention, above-mentioned concrete mud, dehydration mud and supernatant liquid can use as desulfurizing agent.Therefore, when mentioning " concrete mud " among the present invention, it not only refers to concrete mud itself, and comprises " dehydration mud " and " supernatant liquid ".All has desulfurized effect in such concrete mud, dehydration mud and the supernatant liquid because of containing Ca (calcium).For example, contain the above calcium oxide of 10% weight in the concrete mud usually, contain the above calcium oxide of 40% weight for better, the calcium oxide that contains 50-90% weight is better, and the calcium oxide that contains 50～70% weight is best.Simultaneously, be contained in the whole sulphur concentrations in the concrete mud: 1.0% weight is following to be better below 0.8% weight for better, and 0.6% weight is following to be best.
Sulfur method of the present invention, just be to use above-mentioned concrete mud as desulfurizing agent, said method has following several, 1. directly put at least a in above-mentioned growing concrete mud, dehydration mud and the supernatant liquid in the stove, 2. put in the stove behind an amount of mixing above-mentioned substance in fuel, 3. above-mentioned growing concrete mud and/or the dehydration mud of dry solidification is then put in the stove.In these methods, drop into the interior method of stove after preferably using dry solidification dehydration mud, this is to make the generation of the loss of furnace heat transfer pipe or ash few because the mixed volume of rock ballast, rubble is few, simultaneously, want the entrained sensible heat amount of walking of more water that make coexistence less because of the content of calcium, make the heat transfer efficiency height of stove.
In sulfur method of the present invention, be preferably in that the such growing concrete mud of input carries out desulfurization in the fluidized-bed combustion boiler, promptly the mol ratio of Ca content in this growing concrete mud and the sulfur content in the fuel is 1～3.Rub unlike reaction less than 1 time not exclusively when above-mentioned, simultaneously, though rub unlike obtaining higher reactivity greater than 3 the time when above-mentioned, the generation of residue increases, and ash amount to be processed increases.
Sulfur method of the present invention is characterised in that and uses above-mentioned concrete mud as the desulfurizing agent in the fluidized-bed combustion boiler, consider that from the desulfuration efficiency aspect that improves fluidized-bed combustion boiler significantly the present invention is relatively to be suitable for for AFBC boiler, fluidized-bed gasification furnace or fluid bed partial gasification stove.At this, the pressure in the above-mentioned AFBC boiler is generally 2 below the atmospheric pressure.
Sulfur method of the present invention is exactly that concrete mud is put in above-mentioned AFBC boiler, fluidized-bed gasification furnace or the fluid bed partial gasification stove, removes the sulphur content that contains in the gas that produces in the stove.From RDF (refuse derivedfuel) or processed solid fuels such as coke ball, charcoal, perhaps the aspect that utilizes of the approximate fluid fuel of CWM (coalwatermixture) etc. etc. is considered, preferably above-mentioned concrete mud (desulfurizing agent) is dropped in device in advance with after the fuel mix.At this moment, the mol ratio of mixing of the sulfur content in the Ca content in this growing concrete mud and the above-mentioned fuel is preferably 1～3.
In said method, fuel type burned or gasification is the material that contains sulphur, for example, use solid fuels such as coal, petroleum coke, oil-sand, mud coal, the liquid fuel of the similar fluid fuel that water or wet goods mix with coal, heavy oil, kerosene, alcohol etc., the discarded object of the gaseous fuel of LPN, LNG, factory's exhaust etc., rubbish, mud, plastic products, body refuse, rubber tyre etc., perhaps at least two kinds mixture in the above-mentioned substance.
In sulfur method of the present invention, for above-mentioned AFBC boiler, fluidized-bed gasification furnace or fluid bed partial gasification stove, situation is to burn in 500～2000 ℃ range temperature and gasify preferably, like this, can improve reactivity, be to improve desulfuration efficiency, burn in 750～1000 ℃ the range temperature and gasify, effect just better.
Below, according to embodiment the present invention is described in further detail.
Fig. 1 is the summary engineering drawing of employed CFBC evaluating apparatus in embodiment and the comparative example;
Fig. 2 is the schematic diagram that concerns of the Ca/S of embodiment 1,2 and comparative example 1,2 and desulfurization degree;
Fig. 3 is the schematic diagram that concerns of the desulfurization degree of embodiment 1,2 and comparative example 1,2 and ash discharge amount;
After the growing concrete mud (1) with certain characteristic shown in the table 1 is dried, be ground into 2mm following particle and coal (sulfur-bearing: 0.74%) mix.Mol ratio (Ca/S) with Ca content in the concrete mud (1) and the sulphur content amount in the coal is respectively 0,1,2,3,4,5 ratio and modulates six kinds of mixtures.The mixture that obtains through modulation burns in AFBC boiler shown in Figure 1, by the SO of analytic combustion outlet of still
xConcentration, the computational methods below utilizing just can be tried to achieve desulfurization degree.The result as shown in Figure 2.In addition, also carry out the capture of ash in No. 2 cyclone dust collectors shown in Fig. 1 and filter bag device this moment.Ash discharge amount to the average unit interval is measured, and its measurement result as shown in Figure 3.
Desulfurization degree (%)=(a/b) * 100
SO when a=[has only coal (Ca/s=0) burning
xDischarge concentration]-(SO
xDischarge concentration)
SO when b=has only coal (Ca/s=0) burning
xDischarge concentration
In addition, the burning condition of above-mentioned test is: ignition temperature t=850 ℃, and combustion pressure=1atm, air ratio=1.2, coal: the A charcoal with certain characteristic shown in the following table 2, lime: the lime that order father produces, fuel drops into speed: 4kg/h.
Simultaneously, the physical characteristic of growing concrete mud can be measured according to standard separately, as measuring total moisture according to JISM8811, measure Industrial Analysis according to JISM8812, measure elementary analysis according to JISM8813, measure grey melt temperature according to JISM8801, measure the composition of ash according to JISM8815.
After the concrete mud (2) with certain characteristic shown in the table 1 is dried, be ground into 2mm following particle and coal (sulfur-bearing: 0.74%) mix.Divide the rubbing of sulphur content content in content and the coal to be respectively 0,1,2,3,4,5 ratio and to modulate six kinds of mixtures with the Ca in the growing concrete mud (2) unlike (Ca/s).The mixture that obtains through modulation burns in fluidized-bed combustion boiler shown in Figure 1, by the SO of analytic combustion outlet of still
xConcentration can be tried to achieve desulfurization degree.The computational methods of experimental condition, desulfurization degree are consistent with embodiment 1.The result as shown in Figure 2.Simultaneously, the method consistent with embodiment 1 measured the ash discharge amount of average unit interval, and its measurement result as shown in Figure 3.
Coal combustion only in device shown in Figure 1, experimental condition is with embodiment 1.
After reaching normal condition, utilize pump that undried concrete mud (1) is sent in the stove.Regulating the amount of sending into of this concrete mud (1), is 2 with the Ca content in the assurance concrete mud (1) and the mol ratio (Ca/s) of the sulfur content in the coal.Mensuration reaches the SO that discharges after the normal operation
xConcentration, the only SO during coal combustion
xConcentration can be tried to achieve desulfurization degree by method similarly to Example 1, and the desulfurization degree of this moment is 88%.
Comparative example 1
After lime is dried, be ground into 2mm following particle and coal (sulfur-bearing: 0.74%) mix.Divide the mol ratio (Ca/s) of the sulphur content content in content and the coal to be respectively 0,1,2,3,4,5 ratio and to modulate six kinds of mixtures with the Ca in the lime stone.The mixture that obtains through modulation burns in fluidized-bed combustion boiler shown in Figure 1, by the SO of analytic combustion outlet of still
xConcentration can be tried to achieve desulfurization degree.The computational methods of experimental condition, desulfurization degree are consistent with embodiment 1.The result as shown in Figure 2.Simultaneously, the relation of desulfurization degree and ash discharge amount as shown in Figure 3.
Comparative example 2
After dolomite is dried, be ground into 2mm following particle and coal (sulfur-bearing: 0.74%) mix.Divide the mol ratio (Ca/s) of the sulphur content content in content and the coal to be respectively 0,1,2,3,4,5 ratio and to modulate six kinds of mixtures with the Ca in the dolomite.The mixture that obtains through modulation burns in fluidized-bed combustion boiler shown in Figure 1, by the SO of analytic combustion outlet of still
xConcentration can be tried to achieve desulfurization degree.The computational methods of experimental condition, desulfurization degree are consistent with embodiment 1.The result as shown in Figure 2.Simultaneously, the relation of desulfurization degree and ash discharge amount as shown in Figure 3.
If Fig. 2, the foregoing description shown in Figure 3, the result of comparative example are compared, as can be seen, with growing concrete mud as the embodiment 1,2 of the sulfur method of the present invention of desulfurizing agent with the two is compared as the comparative example 1,2 of desulfurizing agent with lime stone or dolomite, when Ca/s is smaller, the former demonstrates very high desulfurization performance, simultaneously, the former desulfurization degree height and the ash discharge amount is very low.
Aforesaid sulfur method of the present invention, owing to use growing concrete mud as the desulfurizing agent in the stove, so can improve the desulfuration in furnace efficient of AFBC boiler, fluidized-bed gasification furnace or fluid bed partial gasification stove significantly, simultaneously, can reduce the use amount of desulfurizing agent, further, can reduce the ash discharge amount of fluid bed furnace significantly.
Table 1
| Mud (1) | Mud (2) | |||
| Total moisture (wt%) | ????35.7 | ????62.9 | ||
| Industrial Analysis | Moisture ash content volatile matter fixed carbon | Air-dry | ????2.6 ????82.6 ????14.8 ????0.0 | ????2.9 ????78.2 ????18.7 ????0.2 |
| Elementary analysis % | Sulphur in the full sulphur fluorine of the carbon water nitrogen oxygen flammability sulphur ppm salt ppm carbon | In the anhydrous ash of anhydrous ashless anhydrous ashless anhydrous ashless anhydrous ashless anhydrous ashless no anhydrous water | ????5.88 ????10.31 ????0.14 ????83.67 ????＜0.01 ????0.53 ????56 ????＜10 ????0.63 | ????6.77 ????9.16 ????＜0.01 ????83.42 ????0.65 ????0.63 ????＜10 ????＜10 ????0.63 |
| Ash melt temperature ℃ | Oxidation | Softening point fusing point fusion point | ????1280 ????1320 ????1350 | ????＞1500 ????＞1500 ????＞1500 |
| Reduction | Softening point fusing point fusion point | ????1270 ????1340 ????1360 | ????＞1500 ????＞1500 ????＞1500 | |
| Acid | SiO 2Al 2O 3TiO 2 | ????33.16 ????5.51 ????0.40 | ????25.63 ????4.40 ????0.7 | |
| The composition % of ash | Alkalescence | Fe 2O 3CaO MgO Na 2O K 2O | ????2.16 ????49.21 ????1.95 ????1.25 ????0.27 | ????1.68 ????57.97 ????2.27 ????0.48 ????＜0.05 |
| Other | P 2O 5MnO V 2O 5SO 2 | ????0.14 ????0.08 ????＜0.05 ????1.58 | ????0.15 ????0.10 ????＜0.05 ????1.57 | |
Table 2
| The A charcoal | |||
| Total moisture (wt%) | ????7.6 | ||
| Caloric value (Kcal/kg | Air-dry | ????6940 | |
| Comminuted HGI | Air-dry | ????42 | |
| Industrial Analysis % | Moisture ash content volatile matter fixed carbon fuel ratio | Air-dry | ????3.6 ????10.4 ????34.7 ????51.3 ????1.48 |
| Elementary analysis % | The full sulphur of carbon water nitrogen oxygen fuel sulphur | Anhydrous ashless anhydrous ashless anhydrous ashless anhydrous ashless anhydrous ashless anhydrous | ????82.9 ????5.1 ????1.8 ????9.6 ????0.64 ????0.74 |
| The button index | ????1 | ||
| Ash melt temperature ℃ | Oxidation | Softening point fusing point fusion point | ????1260 ????1360 ????1430 |
| Reduction | Softening point fusing point fusion point | ????1230 ????1350 ????1440 | |
| Acid | ????SiO 2????Al 2O 3????TiO 2 | ????47.53 ????21.82 ????1.43 | |
| The composition % of ash | Alkalescence | ????Fe 2O 3????CaO ????MgO ????Na 2O ????K 2O | ????4.01 ????18.05 ????1.12 ????＜0.10 ????＜0.05 |
| Other | ????P 2O 5????MnO ????V 2O 5????SO 2 | ????0.46 ????＜0.05 ????＜0.05 ????3.85 | |
Claims (5)
1. the method that the flue gas that produces in AFBC boiler, fluidized-bed gasification furnace or the fluid bed partial gasification stove is carried out desulfurization is characterized in that using concrete mud as the desulfuration in furnace agent.
2. method of the exhaust that produces in the stove being carried out desulfurization, it is characterized in that mol ratio with Ca content in the concrete mud and the sulfur content in the fuel is that this growing concrete mud of 1～3 is put in the stove in AFBC boiler, fluidized-bed gasification furnace or the fluid bed partial gasification stove of temperature in 750～1000 ℃ of scopes, to remove the sulphur in the flue gas that produces in the stove.
3. method of the exhaust that produces in the stove being carried out desulfurization, it is characterized in that dividing rubbing unlike being to put into after 1～3 this growing concrete mud and the fuel mix in the stove in AFBC boiler, fluidized-bed gasification furnace or the fluid bed partial gasification stove of temperature in 750～1000 ℃ of scopes, of sulphur content content in content and the fuel to remove the sulphur in the flue gas that produces in the stove with the Ca in the growing concrete mud.
4. desulfurizing agent is characterized in that this desulfurizing agent is made up of the concrete mud that contains the calcium oxide more than 10% weight.
5. according to the described sulfur method of claim 1 to 3, it is characterized in that containing in this concrete mud the above calcium oxide of 10% weight.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP76919/97 | 1997-03-28 | ||
| JP07691997A JP3384435B2 (en) | 1997-03-28 | 1997-03-28 | Fluidized bed furnace exhaust gas desulfurization method |
| JP76919/1997 | 1997-03-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1224633A true CN1224633A (en) | 1999-08-04 |
| CN1140321C CN1140321C (en) | 2004-03-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB981088260A Expired - Fee Related CN1140321C (en) | 1997-03-28 | 1998-03-28 | Method for desulfurizing flue gas of fluidized bed furnace |
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| Country | Link |
|---|---|
| JP (1) | JP3384435B2 (en) |
| CN (1) | CN1140321C (en) |
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| CN101838574A (en) * | 2010-05-13 | 2010-09-22 | 宜宾市蓝洁环保技术服务有限公司 | Desulfuration agent and preparation method and application thereof |
| CN108485750A (en) * | 2018-03-30 | 2018-09-04 | 毕节双山开发区磐石建材有限公司 | A kind of desulfurizing agent and preparation method thereof prepared as raw material using waste limestone powder |
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| JP2004108688A (en) * | 2002-09-19 | 2004-04-08 | Hitachi Zosen Corp | Combustion method for waste containing organic phosphorus compound as main substance and its device |
| JP4957371B2 (en) * | 2007-05-11 | 2012-06-20 | 王子製紙株式会社 | Method for removing sulfur in fluidized bed combustor |
| JP5309745B2 (en) * | 2008-07-15 | 2013-10-09 | 株式会社Ｉｈｉ | Method and apparatus for controlling bed height of fluidized bed gasifier in gasification facility |
| JP5372652B2 (en) * | 2009-03-11 | 2013-12-18 | 住友重機械工業株式会社 | Combustion equipment |
| JP6172532B2 (en) * | 2014-12-19 | 2017-08-02 | Ｊｆｅスチール株式会社 | Low molecular weight treatment of organic substances and waste treatment method |
| CN105327613B (en) * | 2015-10-27 | 2017-09-29 | 西安建筑科技大学 | A kind of desulfurizing agent and its application |
-
1997
- 1997-03-28 JP JP07691997A patent/JP3384435B2/en not_active Expired - Fee Related
-
1998
- 1998-03-28 CN CNB981088260A patent/CN1140321C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100483026C (en) * | 2003-09-05 | 2009-04-29 | 出光兴产株式会社 | Sulfur removal method and desulfurizer in fluidized bed device |
| CN101797468A (en) * | 2010-04-20 | 2010-08-11 | 杭州恩内泽科技有限公司 | Method for desulfurating coal slime fluidized bed boiler by utilizing papermaking white mud and black liquor |
| CN101797468B (en) * | 2010-04-20 | 2012-06-27 | 杭州恩内泽科技有限公司 | Method for desulfurating coal slime fluidized bed boiler by utilizing papermaking white mud and black liquor |
| CN101838574A (en) * | 2010-05-13 | 2010-09-22 | 宜宾市蓝洁环保技术服务有限公司 | Desulfuration agent and preparation method and application thereof |
| CN101838574B (en) * | 2010-05-13 | 2012-11-14 | 宜宾市蓝洁环保技术服务有限公司 | Desulfuration agent and preparation method and application thereof |
| CN108485750A (en) * | 2018-03-30 | 2018-09-04 | 毕节双山开发区磐石建材有限公司 | A kind of desulfurizing agent and preparation method thereof prepared as raw material using waste limestone powder |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3384435B2 (en) | 2003-03-10 |
| CN1140321C (en) | 2004-03-03 |
| JPH10267221A (en) | 1998-10-09 |
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