CN103266185A - Method for clarifying crude sugar liquor by ultrasonic intensified boiler flue gas - Google Patents
Method for clarifying crude sugar liquor by ultrasonic intensified boiler flue gas Download PDFInfo
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- CN103266185A CN103266185A CN2013102028581A CN201310202858A CN103266185A CN 103266185 A CN103266185 A CN 103266185A CN 2013102028581 A CN2013102028581 A CN 2013102028581A CN 201310202858 A CN201310202858 A CN 201310202858A CN 103266185 A CN103266185 A CN 103266185A
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- boiler flue
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- 238000000034 method Methods 0.000 title claims abstract description 27
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 239000003546 flue gas Substances 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 50
- 235000019738 Limestone Nutrition 0.000 claims abstract description 8
- 239000006028 limestone Substances 0.000 claims abstract description 8
- 238000001354 calcination Methods 0.000 claims abstract description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 33
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 33
- 239000004571 lime Substances 0.000 claims description 33
- DSLZVSRJTYRBFB-LLEIAEIESA-N D-glucaric acid Chemical compound OC(=O)[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O DSLZVSRJTYRBFB-LLEIAEIESA-N 0.000 claims description 29
- 238000002604 ultrasonography Methods 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 238000005352 clarification Methods 0.000 claims description 13
- 239000012535 impurity Substances 0.000 claims description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 239000000292 calcium oxide Substances 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 8
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 239000000839 emulsion Substances 0.000 claims description 7
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 6
- 238000002203 pretreatment Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 235000011121 sodium hydroxide Nutrition 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- 239000000920 calcium hydroxide Substances 0.000 claims description 5
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 4
- 239000003245 coal Substances 0.000 claims description 4
- 235000009508 confectionery Nutrition 0.000 claims description 4
- 239000003345 natural gas Substances 0.000 claims description 4
- 239000001913 cellulose Substances 0.000 claims description 3
- 229920002678 cellulose Polymers 0.000 claims description 3
- 239000000470 constituent Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 33
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract description 16
- 239000008187 granular material Substances 0.000 abstract description 8
- 239000011575 calcium Substances 0.000 abstract description 6
- 229930006000 Sucrose Natural products 0.000 abstract description 5
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract 4
- 229910052791 calcium Inorganic materials 0.000 abstract 4
- 239000005720 sucrose Substances 0.000 abstract 4
- 238000001914 filtration Methods 0.000 abstract 2
- 238000000746 purification Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 235000010216 calcium carbonate Nutrition 0.000 description 16
- 238000006243 chemical reaction Methods 0.000 description 9
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 8
- 238000004042 decolorization Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Chemical compound OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 239000006188 syrup Substances 0.000 description 4
- 235000020357 syrup Nutrition 0.000 description 4
- 235000011116 calcium hydroxide Nutrition 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 235000016068 Berberis vulgaris Nutrition 0.000 description 1
- 241000335053 Beta vulgaris Species 0.000 description 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 208000018569 Respiratory Tract disease Diseases 0.000 description 1
- 235000007201 Saccharum officinarum Nutrition 0.000 description 1
- 240000000111 Saccharum officinarum Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- NKWPZUCBCARRDP-UHFFFAOYSA-L calcium bicarbonate Chemical compound [Ca+2].OC([O-])=O.OC([O-])=O NKWPZUCBCARRDP-UHFFFAOYSA-L 0.000 description 1
- 229910000020 calcium bicarbonate Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000010904 focused beam reflectance measurement Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000009923 sugaring Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a method for clarifying crude sugar liquor by ultrasonic intensified boiler flue gas. The method comprises the following steps of: adding a calcium sucrose solution into the crude sugar liquor, introducing the boiler flue gas, and performing ultrasonic intensified treatment on the crude sugar liquor in which the boiler flue gas is introduced and the calcium sucrose is added, wherein the ultrasonic conditions comprise the ultrasonic intensity of 0.2-20 W/cm<2>, the ultrasonic frequency of 2*104Hz-2*109Hz and the ultrasonic time of 2-10 minutes; regulating the pH value of the crude sugar liquor with calcium sucrose, in which the boiler flue gas is introduced, to be 8.2-10.6, wherein the temperature is controlled to be 50-85 DEG C; and filtering, and collecting filtration liquid. Due to the calcium sucrose, the time of filling the boiler flue gas in the sugar liquor can be shortened; due to the ultrasonic intensified treatment, the generated calcium carbonate granules are uniform, non-sugar substances in the sugar liquor can be effectively adsorbed, and the sugar liquor purification effect is good; and moreover, kilns for calcining limestone can be reduced, the cost is reduced, the CO2 emission in the flue gas can be reduced, and the ecological environment is protected.
Description
Technical field
The present invention relates to the clarification of raw sugar liquid, particularly relate to a kind of method of utilizing intensified by ultrasonic wave boiler flue clarification raw sugar liquid, belong to industrialization sugaring and environmental protection field.
Background technology
Raw sugar raw sugar liquid dissolving or that extract from raw materials such as beet or sugarcane contains the impurity of 2-20%, and sugar refinery utilizes the carbonatation process clarification process, namely adds milk of lime (calculating with effective constituent CaO usually) in raw sugar liquid, feeds CO then
2, make CO
2With the lime generation calcium carbonate granule that reacts, meanwhile adsorb non-sugar impurity.Syrup colour by its clarification is low, the purity height of crystallization products obtained therefrom white sugar, and color and luster is low.
The finings CO that uses in the carbonatation process technology
2Mainly be to prepare CO by calcined limestone in the limestone kiln
2Volumetric concentration is 30-38%, and this reaction is thermo-negative reaction, and it is combustion-supporting to consume 10% coke during calcining.In addition, calcine the CO that makes
2All the other are all discharged to atmosphere except a part is used as the finings utilization, and the superfluous lime mud in calcining back belongs to solid waste.So the limestone kiln that carbonatation process technology adopts is the running cost height not only, and pollutes the environment, environment protecting is poor.
On the other hand, the material that contains a large amount of contaminate environment behind the fuel such as combustion of industrial boiler coal, crude oil, Sweet natural gas, waste fiber in the discharged flue gas, the composition of these contaminate environment is discharged in the atmosphere, can damage the ozone layer, cause the formation of acid rain, the generation of respiratory tract disease and the change of plant metabolism process.The mode of the boiler flue of sugar enterprise's processing at present generally is the water film dedusting method, and the water film dedusting method can only be removed dust, handles the back flue gas and still contains CO
2And SO
2Deng composition, CO wherein
2Content be the 8-18%(volume percent), it directly is discharged in the atmosphere, not only wasted resource but also contaminate environment.Certainly its application prospect has attracted our extensive concern.More preceding Chinese invention patent ZL200510032858.7 has announced a kind of sugar refining technology that utilizes boiler flue to make finings, and its technology is to add calcium oxide or regeneration filter mud in raw sugar liquid, feeds to contain CO
2Boiler flue, boiler flue and calcium oxide or regeneration filter mud reaction generate calcium carbonate and adsorb non-sugar impurity in the liquid glucose.But this patent does not relate to adopt and adds lime saccharate, feeds to contain CO
2Boiler flue, and utilize ultrasonic technique to strengthen reaction to generate the technology that calcium carbonate is clarified raw sugar liquid.Ultrasonic technology is a kind of science of emerging, multidisciplinary intersection, for new method has been opened up in the research of subjects such as chemical industry, food, biology, medicine, and from using above-mentioned industry is produced great influence.
Summary of the invention
The objective of the invention is to overcome the shortcoming that prior art exists, a kind of save energy is provided, reduces cost, increases economic efficiency, environment protecting utilizes boiler flue to make the process modification of finings preferably.
The present invention adds lime saccharate solution earlier in raw sugar liquid, feed to contain CO
2Boiler flue, CO in the boiler flue
2Contact with water and to generate carbonic acid, the calcium ion reaction generation calcium carbonate in carbonic acid and the liquid glucose also adsorbs non-sugar impurity in the syrup.
The object of the invention is achieved through the following technical solutions:
Utilize the method for intensified by ultrasonic wave boiler flue clarification raw sugar liquid: in raw sugar liquid, add lime saccharate solution, feed boiler flue then, control boiler flue atmospheric pressure is 0.01-0.10Mpa, intensified by ultrasonic wave is handled the raw sugar liquid that adds lime saccharate that is feeding boiler flue, and ultrasound condition is: ultrasound intensity 0.2W/cm
2-20W/cm
2Ultrasonic frequency 2 * 10
4Hz-2 * 10
9Hz; Ultrasonic time 2-10min, the feeding boiler flue is 8.2-10.6 to the pH of the raw sugar liquid that adds lime saccharate, the control temperature is 50-85 ℃; Filter, collect cleaner liquid;
Described boiler flue is the flue gas that produces behind boiler combustion coal, oil, Sweet natural gas, Mierocrystalline cellulose or the xylogen, through dedusting, clear water or soda lye wash, gas-water separation pre-treatment, remove solid, suspended impurity and sulfide then, in volume percent, the CO that obtains
2Content is the mixed gas of 8-18%;
In effective constituent CaO, described adding lime saccharate solution add-on is the 0.4-1.5% of raw sugar liquid quality.
Further, described lime saccharate solution is that calcium hydroxide emulsion mixes with raw sugar liquid and reacts generation.
Described calcium hydroxide emulsion is that the powder or the lump lime that generate behind the limestone calcination add the emulsion that the water slake generates.
The time of described feeding boiler flue is preferably 5-12min.
Described ultrasound intensity is preferably 4W/cm
2-10W/cm
2Described ultrasonic time is preferably 4-10min.
Prior art is CO
2Earlier generate carbonic acid with water, again and Ca (OH)
2Generate calcium carbonate, react as follows:
The present invention adds lime saccharate, and the formation reaction process of lime saccharate and calcium carbonate is as follows:
The present invention compared with prior art has following advantage and effect:
(1) the present invention adds lime saccharate in raw sugar liquid, can reduce time and the foam number of boiler flue full charge raw sugar liquid.Because lime saccharate solubleness is big, dispersed excellent, compare Ca (OH)
2Can strengthen and the contacting of carbonic acid, at the CaCO that generates equal quantities
3Condition under, adopt technology of the present invention can reduce the amount of the required boiler flue of full charge raw sugar liquid, namely reduced full charge time and foam number accordingly.
(2) the present invention can make the calcium carbonate granule of reaction generation even with intensified by ultrasonic wave processing reaction objects system, and surface-area is big, but the non-sugar impurity in the active adsorption syrup, liquid glucose purity improves 1-13%, and percent of decolourization can reach 60-85%.
(3) the present invention can reduce traffic capacity and the storage place of the used Wingdale in limestone kiln, reduces dust discharge amount, and environment protecting is good.
(4) the present invention can reduce CO in the boiler flue
2Quantity discharged, to preserve the ecological environment, to take full advantage of resource significant.
Description of drawings
Fig. 1 is embodiment 4 by the ultrasonic and chord length distribution figure of the calcium carbonate granule by supersound process not.
Embodiment
For understanding the present invention better, the present invention will be further described below in conjunction with embodiment, but embodiments of the present invention are not limited thereto.
Embodiment 1
Boiler flue is taken from the flue gas that produces behind the boiler combustion coal in sugar refinery, through dedusting, clear water or soda lye wash, gas-water separation pre-treatment, removes solid, suspended impurity and sulfide then, gets mainly to contain N
2, CO
2, CO and O
2Deng mixed gas, CO wherein
2Content is the 13-18%(volume percent), gaseous tension 0.01-0.10MPa.
Get the raw sugar liquid 1000g of 55 ° of Bx, add and contain effective composition CaO the lime saccharate solution that is 15g, after stirring, feed boiler flue, intensified by ultrasonic wave is handled the raw sugar liquid that adds lime saccharate that is feeding boiler flue, and ultrasound condition is: ultrasound intensity 20W/cm
2Ultrasonic frequency 2 * 10
9Hz; Ultrasonic time 2min.The feeding boiler flue is that 8.2 o'clock required times are about 12min to the pH of the raw sugar liquid that adds lime saccharate, and the control temperature is 50-54 ℃, in time filters, and collects cleaner liquid, detects index of correlation according to the measuring method among the international standard ICUMSA.
Colour: 3300IU before handling
420nmHandle back colour: 600IU
420nm
Percent of decolourization=(3300-600)/3300 * 100%=81.8%
Purity before handling: 98.3% (weight percent); Handle back purity: 99.5% (weight percent)
Improve purity difference: 99.5-98.3=1.2
Opacity: 513BTU before handling; Handle back opacity: 45BTU
The opacity clearance: (513-45)/513 * 100%=91.2%.
Embodiment 2
Boiler flue is taken from the flue gas that produces behind the boiler combustion oil in sugar refinery, through dedusting, clear water or soda lye wash, gas-water separation pre-treatment, removes solid, suspended impurity and sulfide then, gets mainly to contain N
2, CO
2, CO and O
2Deng mixed gas, CO wherein
2Content is the 11-16%(volume percent), gaseous tension 0.01-0.10MPa.
Get the raw sugar liquid 1000g of 35 ° of Bx, add and contain effective composition CaO the lime saccharate solution that is 10g, after stirring, feed boiler flue, intensified by ultrasonic wave is handled the raw sugar liquid that adds lime saccharate that is feeding boiler flue, and ultrasound condition is: ultrasound intensity 10W/cm
2Ultrasonic frequency 2 * 10
6Hz; Ultrasonic time 10min.The feeding boiler flue is that 10.5 o'clock required times are about 10min to the pH of the raw sugar liquid that adds lime saccharate, and the control temperature is 55-59 ℃, in time filters, and collects cleaner liquid, detects index of correlation according to the measuring method among the international standard ICUMSA.
Colour: 4790IU before handling
420nmHandle back colour: 800IU
420nm
Percent of decolourization=(4790-800)/4790 * 100%=83.3%
Purity before handling: 96.5% (weight percent); Handle back purity: 98.8% (weight percent)
Improve purity difference: 98.8-96.5=2.3
Opacity: 610BTU before handling; Handle back opacity: 59BTU
The opacity clearance: (610-59)/610 * 100%=90.3%.
Embodiment 3
Boiler flue is taken from the flue gas that produces behind the boiler combustion Sweet natural gas in sugar refinery, through dedusting, clear water or soda lye wash, gas-water separation pre-treatment, removes solid, suspended impurity and sulfide then, gets mainly to contain N
2, CO
2, CO and O
2Deng mixed gas, CO wherein
2Content is the 9-13%(volume percent), gaseous tension 0.01-0.10MPa.
Get the raw sugar liquid 1000g of 18 ° of Bx, add and contain effective composition CaO the lime saccharate solution that is 4g, after stirring, feed boiler flue, intensified by ultrasonic wave is handled the raw sugar liquid that adds lime saccharate that is feeding boiler flue, and ultrasound condition is: ultrasound intensity 0.2W/cm
2Ultrasonic frequency 6 * 10
4Hz; Ultrasonic time 4min.The feeding boiler flue is that 10.4 o'clock required times are about 5min to the pH of the raw sugar liquid that adds lime saccharate, and the control temperature is 80-85 ℃, in time filters, and collects cleaner liquid, detects index of correlation according to the measuring method among the international standard ICUMSA.
Colour: 8800IU before handling
420nmHandle back colour: 3000IU
420nm
Percent of decolourization=(8800-3000)/8800 * 100%=65.9%
Purity before handling: 82.5% (weight percent); Handle back purity: 94.5% (weight percent)
Improve purity difference: 94.5-82.5=12
Opacity: 1120BTU before handling; Handle back opacity: 50BTU
The opacity clearance: (1120-50)/1120 * 100%=95.5%.
Embodiment 4
For the further advantage of understanding ultrasound-enhanced processing boiler flue clarification raw sugar liquid, observe nothing or add ultrasound-enhanced to reacting the influence of the calcium carbonate granule chord length that generates with the online particle size analyzer of convergent pencil of rays (FBRM).
Boiler flue is taken from the flue gas that produces behind the boiler combustion Mierocrystalline cellulose in sugar refinery and the xylogen, through dedusting, clear water or soda lye wash, gas-water separation pre-treatment, removes solid, suspended impurity and sulfide then, gets mainly to contain N
2, CO
2, CO and O
2Deng mixed gas, CO wherein
2Content is the 8-14%(volume percent), gaseous tension 0.01-0.10MPa.
Get the raw sugar liquid 1000g of 25 ° of Bx, add and contain effective composition CaO the Calcium hydrogen carbonate emulsion that is 8g, after stirring, feed boiler flue, intensified by ultrasonic wave is handled the raw sugar liquid that adds lime saccharate that is feeding boiler flue, and ultrasound condition is: ultrasound intensity 4W/cm
2Ultrasonic frequency 7 * 10
7Hz; Ultrasonic time 5min.The feeding boiler flue is that 8.5 o'clock required times are about 7min to the pH of the raw sugar liquid that adds lime saccharate, and the control temperature is 60-65 ℃, in time filters, and collects cleaner liquid, detects index of correlation according to the measuring method among the international standard ICUMSA.
Colour: 7790IU before handling
420nmHandle back colour: 2800IU
420nm
Percent of decolourization=(7790-2800)/7790 * 100%=64.1%
Purity before handling: 86.5% (weight percent); Handle back purity: 93.5% (weight percent)
Improve purity difference: 93.5-86.5=7.0
Opacity: 1010BTU before handling; Handle back opacity: 49BTU
The opacity clearance: (1010-49)/1010 * 100%=95.1%.
Fig. 1 is present embodiment ultrasound condition intensive treatment and the calcium carbonate granule chord length distribution figure that has added the raw sugar liquid reaction generation of lime saccharate without ultrasound-enhanced processing stack gas full charge.Represent that the particle number of a certain chord length accounts for the per-cent of the total particle number that monitors for #% in the ordinate zou among Fig. 1 number.As shown in Figure 1, contrast no ultrasound-enhanced processing and the calcium carbonate granule chord length distribution that generates, it is narrower to add the calcium carbonate granule chord length distribution that ultrasound-enhanced processing reaction generates.Just, under the condition that generates equal mass calcium carbonate, the ultrasound-enhanced specific surface area of calcium carbonate that makes obviously increases, and can obviously increase the ability of non-sugar impurity in the absorption syrup.
As can be seen from the above embodiments, add lime saccharate solution in raw sugar liquid, feeding contains CO then
2Boiler flue, carry out intensified by ultrasonic wave simultaneously and handle, but the non-sugar impurity in the calcium carbonate active adsorption liquid glucose that generates in the reactant system, liquid glucose purity improves between the 1.2-12%, between the percent of decolourization 64.1-83.3%; Can also reduce the used kiln of calcined limestone, reduce cost, increase economic efficiency; And can reduce CO in the stack gas
2Quantity discharged, preserve the ecological environment.
Claims (6)
1. utilize the method for intensified by ultrasonic wave boiler flue clarification raw sugar liquid, it is characterized in that: in raw sugar liquid, add lime saccharate solution, feed boiler flue then, control boiler flue atmospheric pressure is 0.01-0.10Mpa, intensified by ultrasonic wave is handled the raw sugar liquid that adds lime saccharate that is feeding boiler flue, and ultrasound condition is: ultrasound intensity 0.2W/cm
2-20W/cm
2Ultrasonic frequency 2 * 10
4Hz-2 * 10
9Hz; Ultrasonic time 2-10min, the feeding boiler flue is 8.2-10.6 to the pH of the raw sugar liquid that adds lime saccharate, the control temperature is 50-85 ℃; Filter, collect cleaner liquid;
Described boiler flue is the flue gas that produces behind boiler combustion coal, oil, Sweet natural gas, Mierocrystalline cellulose or the xylogen, through dedusting, clear water or soda lye wash, gas-water separation pre-treatment, remove solid, suspended impurity and sulfide then, in volume percent, the CO that obtains
2Content is the mixed gas of 8-18%;
In effective constituent CaO, described adding lime saccharate solution add-on is the 0.4-1.5% of raw sugar liquid quality.
2. the method for utilizing intensified by ultrasonic wave boiler flue clarification raw sugar liquid according to claim 1 is characterized in that: described lime saccharate solution is that calcium hydroxide emulsion mixes with raw sugar liquid and reacts generation.
3. the method for utilizing intensified by ultrasonic wave boiler flue clarification raw sugar liquid according to claim 2, it is characterized in that: described calcium hydroxide emulsion is that the powder or the lump lime that generate behind the limestone calcination add the emulsion that the water slake generates.
4. the method for utilizing intensified by ultrasonic wave boiler flue clarification raw sugar liquid according to claim 1, it is characterized in that: the time of described feeding boiler flue is 5-12min.
5. the method for utilizing intensified by ultrasonic wave boiler flue clarification raw sugar liquid according to claim 1, it is characterized in that: described ultrasound intensity is 4W/cm
2-10W/cm
2
6. the method for utilizing intensified by ultrasonic wave boiler flue clarification raw sugar liquid according to claim 1, it is characterized in that: described ultrasonic time is 4-10min.
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103586255A (en) * | 2013-10-23 | 2014-02-19 | 华南理工大学 | Method for treating carbonic acid method sugarhouse filter mud by using boiler flue gas |
CN103638808A (en) * | 2013-11-15 | 2014-03-19 | 华南理工大学 | Method for enriching carbon dioxide in sugar refinery flue gas by utilizing carbonic anhydrase to catalyze lime milk |
CN104962664A (en) * | 2015-07-15 | 2015-10-07 | 广州甘蔗糖业研究所 | Method for generating calcium carbonate clear raw sugar solution by using boiler flue gas sectional carboxylic acid saturation |
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Cited By (6)
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CN103586255A (en) * | 2013-10-23 | 2014-02-19 | 华南理工大学 | Method for treating carbonic acid method sugarhouse filter mud by using boiler flue gas |
CN103586255B (en) * | 2013-10-23 | 2016-06-22 | 华南理工大学 | The method utilizing boiler flue gas disposal carbonatation process sugar refinery filter mud |
CN103638808A (en) * | 2013-11-15 | 2014-03-19 | 华南理工大学 | Method for enriching carbon dioxide in sugar refinery flue gas by utilizing carbonic anhydrase to catalyze lime milk |
CN103638808B (en) * | 2013-11-15 | 2016-10-05 | 华南理工大学 | Utilize the method that carbonic anhydrase catalysis lime cream is enriched with sugar refinery carbon dioxide in flue gas |
CN104962664A (en) * | 2015-07-15 | 2015-10-07 | 广州甘蔗糖业研究所 | Method for generating calcium carbonate clear raw sugar solution by using boiler flue gas sectional carboxylic acid saturation |
CN104962664B (en) * | 2015-07-15 | 2018-07-24 | 广东省生物工程研究所(广州甘蔗糖业研究所) | The method that calcium carbonate clarifies raw sugar liquid is generated using boiler flue segmented carbonation |
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