CN105906117A - Treatment method and apparatus for membrane filtration concentrate for membrane-process clarification sugar production - Google Patents
Treatment method and apparatus for membrane filtration concentrate for membrane-process clarification sugar production Download PDFInfo
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- CN105906117A CN105906117A CN201610278570.6A CN201610278570A CN105906117A CN 105906117 A CN105906117 A CN 105906117A CN 201610278570 A CN201610278570 A CN 201610278570A CN 105906117 A CN105906117 A CN 105906117A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/32—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
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Abstract
A treatment method for membrane filtration concentrate for membrane-process clarification sugar production comprises the following steps: adding lime milk into membrane filtration concentrate for the first time to adjust pH to 7.0-7.5, heating for the first time to 45-55 DEG C, and adding lime milk for the second time to adjust pH to 11.5-13.0; introducing carbon dioxide gas until pH is 8.2-8.4; heating for the second time to 70-80 DEG C, adding a filtration aid, stirring well, and feeding to a press filter for filtering to obtain filtrate and filter cake. The filtrate is useful directly in sugar production, improving the economic benefit of membrane-process clarification sugar production; the filter cake is rich in organic content and may be used as organic fertilizer material. The method has the advantages such as process simplicity, ease of operation, low equipment input, low energy consumption, low cost of the filtration aid and zero environmental pollution.
Description
Technical field
The present invention relates to cane sugar manufacture field, specifically a kind of processing method and device of embrane method clarification sugaring film-filter concentration liquid.
Background technology
Guangxi is the main producing region of China's sugar, output accounts for the more than 60% of the whole nation, Guangxi cane sugar factory mainly adopts sulfurous method to produce white granulated sugar at present, the sulfur dioxide gas that this technique needs sulfur burning to produce is made clarification aid, therefore residual a certain amount of sulfur dioxide .GB317-2006 (white granulated sugar) standard regulation in white granulated sugar product, therefore, the residual quality that has affected to a great extent white granulated sugar of the sulphur in these white granulated sugar goods improves and range of application is expanded for top grade white granulated sugar residual sulfur dioxide≤15mg/kg..
Membrane separation technique is a kind of efficient purification technique, separation process is without phase transformation, can make each in substance to be processed component is separated, purify or concentrate, can improve product quality and save energy consumption. in recent years, film application obtains develop rapidly, will embrane method clarification technique is applied to cane sugar manufacture technical process and also progresses into people's the visual field. and large quantity research shows to adopt membrane filtration sugar cane juice, can obtain the sugarcane clear liquid of higher quality. but early stage research mainly concentrates on the clarification of applying membrane filtering sugarcane juice, there is no to realize membrane separation technique and substitute traditional chemical clarification technology completely. this seminar is devoted to film in recent years clarification technique is applied to cane sugar manufacture process, adopt different pore size ceramic membrane directly filter Cane Mixed Juice, produce Gao Pin matter is without sulphur sucrose, solve the white granulated sugar product sulfur dioxide that traditional sugar refining technology exists, the food of polyacrylamide monomer residue product safety problem.
Film-filter concentration liquid, while referring to membrane filtration clarification Cane Mixed Juice, the bagasse in small, broken bits in mixed juice, earth, starch, many The harmful substance that sugar, protein and large molecule pathogenic bacteria etc. affect sugarcane production white sugar cannot see through rete, is retained down Raffinate. be ensure membrane flux stable, adopting in the technical process of ceramic membrane clarification Cane Mixed Juice, general control film mistake The volume cycles of concentration of filter is between 10～12; And adopt organic film to process in the technical process of Cane Mixed Juice, general control Volume cycles of concentration is between 5～6. therefore in the clear juice of production membrane filtration high-quality, also can produce 10%～20% membrane filtration Concentrate. in film-filter concentration liquid except containing the shadow such as bagasse in small, broken bits, earth, starch, polysaccharide, protein and large molecule pathogenic bacteria Ring beyond the harmful substance of sugarcane production white sugar, also contain more Sucrose, if concentrate is directly discharged, not only can be large Large sugar refinery economic benefit that reduces, also will cause serious problem of environmental pollution. and therefore, how rationally to process film-filter concentration liquid, have The recovery of effect Sucrose is wherein that film separating clarifying technology is applied to the primary problem solving of cane sugar manufacture process.
Summary of the invention
In order to address the above problem, the invention provides a kind of processing method and device of embrane method clarification sugaring film-filter concentration liquid.
To achieve these goals, the present invention has adopted following technical scheme:
A processing method for embrane method clarification sugaring film-filter concentration liquid, comprises the steps:
In film-filter concentration liquid, add for the first time milk of lime to regulate pH to 7.0～7.5, be then heated to for the first time 45～55 DEG C, then second time addition lime cream regulation pH to 11.5～13.0; Pass into carbon dioxide until pH=8.2～8.4; Second Inferiorly be heated to 70～80 DEG C, add filter aid, stir, deliver to Filter Press, obtain filtrate and filter cake.
Described lime milk concentration is 5～30 ° of Be.
The addition of described filter aid is the 1.5～3.5% of film-filter concentration liquid weight.
Described filter aid is diatomite or sugar refinery bagasse and diatomaceous mixture.
A treating apparatus for embrane method clarification sugaring film-filter concentration liquid,
Including the lime cream being sequentially connected with tentatively mix container, the first firing equipment, gas liquid reaction tank, second heating set is standby, juice container and filter press are stored up in stirring
Also comprise milk of lime reservoir vessel, carbon dioxide air supply source and filter aid reservoir vessel, milk of lime reservoir vessel is connected to the preliminary mixer of milk of lime and gas-liquid retort simultaneously, carbon dioxide air supply source is connected to gas liquid reaction tank, and filter aid reservoir vessel is connected to and stirs storage juice container.
The feeding mouth of the preliminary mixer of described milk of lime is connected with the film-filter concentration liquid outlet of embrane method sugar clarification workshop section.
The filtrate (liquid of described filter press is connected to filtrate storage bin, and filtered solid outlet is connected to filter cake and stacks field.
Described carbon dioxide air supply source is sugar refinery flue gas after udst separation.
Beneficial effect of the present invention is:
The filtrate hammer degree that the method for the invention obtains is between 14～18 ° of BX, and turbidity is between 8～50NTU, and purity exists Between 65%～85%, colour, between 600～1500IU, is used directly for Closed Circulation in Sugar Production, and the sucrose response rate is up to 96% Above, the sugar in efficient recovery film-filter concentration liquid, thus improve the economic benefit of embrane method clarification sugaring; The method obtains Filter cake moisture content, between 60%～70%, is 1.5%～1.8% to sugarcane ratio, and the content of organic matter is abundant, can be used as fertilizer Raw material.The present invention has that technical process is simple, easily operated, equipment investment is few, energy consumption is low, filter aid low cost and will not be dirty The advantages such as dye environment.
Accompanying drawing explanation
Fig. 1 is the equipment connection diagram of the processing means of embrane method of the present invention clarification sugaring film-filter concentration liquid.
Detailed description of the invention
Below by embodiment, technical scheme is further elaborated.
Embodiment 1
The processing method of a kind of embrane method clarification sugaring film-filter concentration liquid, comprises the steps:
The film-filter concentration liquid 1m that the cycles of concentration of getting the generation of film clarifying process is 103, add for the first time in film-filter concentration liquid
Enter the lime cream regulation pH to 7.2 of 10 ° of Be, be then heated to 45 DEG C for the first time, then second time adds the lime cream regulation of 10 ° of Be
PH to 11.9；It is passed through carbon dioxide until pH=8.3；Second time is heated to 70 DEG C, adds the kieselguhr of 20kg as helping
Filtering agent, stirs, and is pumped to Filter Press, it is thus achieved that filtrate and filter cake.
The concrete operations of filter press process are: to pressure filter, the material pumping of above-mentioned addition filter aid is carried out filter pressing,
In order to realize the maximum withdrawal of sugar, filter pressing is fetched water after terminating eluting filter cake sugar, and temperature of fetching water is 55 DEG C, and the amount of fetching water is
23.25kg.After pressure-filtering process terminates, peel off filter cake, obtain filtrate and filter cake.Filtrate turbidity is 8.75NTU, and colour is 639IU,
Purity 73.28%；Filter cake quality is 155kg, is 15.5% to concentrated solution ratio, and filter cake is aqueous is divided into 60%, sugary is divided into
1.5%.Pressure-filtering process feed liquid strainability is good, and the rate of filtration is fast, it is possible to preferably forms cake layer, plays filtrating aid function；Filter
Cake moisture content is low, it is easy to peel off filter cloth.Before and after material processes, indices is as shown in table 1.
The indices of material before and after table 1. process
| Index | Mixed juice | Concentrated solution | Filtrate | Filter cake |
| pH | 5.2～5.8 | 6.8 | 8.32 | 8.3 |
| Brix | 13～16 | 19.1 | 16.6 | -- |
| Viscosity (μ/mpa.s) | 3.5～4.5 | 55 | 1.5 | -- |
| Turbidity (NTU) | 500～5000 | 24780 | 8.75 | -- |
| Colloidal content (% is to material) | 0.1～0.2 | 4.5 | 0.02 | -- |
| Gu the most tolerant content (% is to material) | 0.39～0.54 | 5.3 | -- | -- |
| Colour (IU) | 1500～3000 | 3258 | 639 | -- |
| Letter purity (Ap) | 80～85 | 75.3 | 77.6 | -- |
| Pol (Pol) | 10.14～13.6 | 13.61 | 12.16 | -- |
| Filter cake quality (% is to concentrated solution) | -- | -- | -- | 15.5 |
| Filter cake (% is to filter cake) Han sugar | -- | -- | -- | 1.5 |
| Moisture (%) | -- | -- | -- | 60 |
It addition, for the effect verifying processing method core process parameter of the present invention, also carried out two groups to having a competition
Test.
Each time of comparative example 1 test second time in embodiment 1 is added lime cream regulation pH be reduced to 11.3,11.1,
11.0,10.8 and 10.5, it is identical with embodiment 1 that remaining processes technique, and test result indicate that of comparative example 1, along with adding stone
The pH of ash breast regulation reduces, and the strainability of material is deteriorated, 1/3rd that inlet amount is total reduction of feed volume time, raw feed liquid
Can not continue through filter cloth, it is impossible to well form cake layer, filter cake top half forms relatively thin mud layer, the latter half feed liquid
Pile up, now feed pump automatically unloading, it is impossible to form complete filter cake, filter unsuccessfully.
Each time of comparative example 2 test the diatomaceous addition of filter aid in embodiment 1 is reduced to 12kg, 10,8,
6kg, it is identical with embodiment 1 that remaining processes technique, and test result indicate that of comparative example 2, along with filter aid kieselguhr consumption
Minimizing, diatomaceous bridge formation drainage effect be deteriorated, cause the strainability of material to be deteriorated, material can not filter completely, is entering
Doses be 1/3rd of total inventory time, raw feed liquid can not continue through filter cloth, it is impossible to well forms cake layer, filter
Cake top half forms relatively thin mud layer, and the latter half feed liquid is piled up, now feed pump automatically unloading, it is impossible to form complete filter
Cake, filters unsuccessfully.
Embodiment 2
The processing method of a kind of embrane method clarification sugaring film-filter concentration liquid, comprises the steps: to take what film clarifying process produced
Cycles of concentration is the film-filter concentration liquid of 10, adds the lime cream regulation pH to 7.2 of 10 ° of Be for the first time, so in film-filter concentration liquid
Rear first is heated to 45 DEG C, then second time adds the lime cream regulation pH to 11.5 of 10 ° of Be；It is passed through carbon dioxide, until
PH=8.3；Second time is heated to 70 DEG C, and the kieselguhr of addition film-filter concentration liquid weight 2%, as filter aid, stirs, pump
Deliver to Filter Press, it is thus achieved that filtrate and filter cake.
The concrete operations of filter press process are: by the material pumping after addition filter aid to pressure filter, carry out sheet frame pressure
Filter.For realizing the recovery of sugar, filter pressing is fetched water after terminating eluting filter cake sugar, and temperature of fetching water is 55 DEG C, and the amount of fetching water is 150%
To filter cake amount.After pressure-filtering process terminates, peel off filter cake, obtain filtrate and filter cake.Filter cake quality is 17.1% to concentrated solution ratio.Place
Before and after reason, the indices of material is as shown in table 2.
The indices of material before and after table 2. process
Embodiment 3
The processing method of a kind of embrane method clarification sugaring film-filter concentration liquid, comprises the steps: to take what film clarifying process produced
Cycles of concentration is the film-filter concentration liquid of 10, adds the lime cream regulation pH to 7.2 of 10 ° of Be for the first time, so in film-filter concentration liquid
Rear first time is heated to 45 DEG C, then second time adds the lime cream regulation pH to 11.9 of 10 ° of Be；It is passed through carbon dioxide, directly
To pH=8.3；Second time is heated to 70 DEG C, adds the kieselguhr by film-filter concentration liquid weight 1% and film-filter concentration liquid weight 1%
Sugar refinery bagasse mixture as filter aid, stir, be pumped to filter press filter, it is thus achieved that filtrate and filter cake.
The concrete operations of filter press process are: the material pumping after adding filter aid is pressed to filter press
Filter, for realizing the maximum withdrawal of sugar, filter pressing is fetched water after terminating eluting filter cake sugar, and temperature of fetching water is 55 DEG C, and the amount of fetching water is
150% pair of filter cake amount.Filter pressing peels off filter cake after terminating, and obtains filtrate and filter cake.Filter cake quality is 16.0% to concentrated solution ratio.Place
Before and after reason, the indices of material is as shown in table 3.
The indices of material before and after table 3. process
| Index | Concentrated solution | Filtrate | Filter cake |
| pH | 6.9 | 8.3 | 8.2 |
| Brix | 18.9 | 16.2 | -- |
| Viscosity (μ/mpa.s) | 58 | 1.6 | -- |
| Turbidity (NTU) | 30002 | 30.5 | -- |
| Colloidal content (% is to material) | 4.5 | 0.04 | -- |
| Gu the most tolerant content (% is to material) | 5.6 | -- | -- |
| Colour (IU) | 2890 | 726 | -- |
| Letter purity (Ap) | 75.5 | 76.8 | -- |
| Pol (Pol) | 13.31 | 11.58 | -- |
| Filter cake quality (% is to concentrated solution) | -- | -- | 16 |
| Filter cake (% is to filter cake) Han sugar | -- | -- | 1.6 |
| Moisture (%) | -- | -- | 67 |
Embodiment 4
The processing method of a kind of embrane method clarification sugaring film-filter concentration liquid, comprises the steps:
In film-filter concentration liquid, add lime cream regulation pH to 7.5 for the first time, be then heated to 55 DEG C, then second for the first time
Secondary addition lime cream regulation pH to 13.0；It is passed through carbon dioxide until pH=8.4；Second time is heated to 80 DEG C, and addition helps
Filtering agent, stirs, and delivers to Filter Press, it is thus achieved that filtrate and filter cake.
Described lime milk concentration is 30 ° of Be.
The addition of described filter aid is the 3.5% of film-filter concentration liquid weight.
Embodiment 5
The processing method of a kind of embrane method clarification sugaring film-filter concentration liquid, comprises the steps:
In film-filter concentration liquid, add lime cream regulation pH to 7.0 for the first time, be then heated to 45 DEG C, then second for the first time
Secondary addition lime cream regulation pH to 11.5；It is passed through carbon dioxide until pH=8.2；Second time is heated to 70 DEG C, and addition helps
Filtering agent, stirs, and delivers to Filter Press, it is thus achieved that filtrate and filter cake.
Described lime milk concentration is 5 ° of Be.
The addition of described filter aid is the 1.5～3.5% of film-filter concentration liquid weight.
Described filter aid is kieselguhr or sugar refinery bagasse and diatomaceous mixture.
Embodiment 6
The processing method of a kind of embrane method clarification sugaring film-filter concentration liquid, comprises the steps:
Obtain film-filter concentration liquid from embrane method sugar clarification workshop section 1, in film-filter concentration liquid, add lime cream regulation for the first time
PH to 7.2, this step is carried out in lime cream tentatively mixes container 2,
Then utilize the first firing equipment 4 to carry out for the first time and be heated to 50 DEG C,
Second time adds lime cream regulation pH to 12 again, is passed through carbon dioxide until pH=8.3；This step is in gas-liquid
Retort 6 is carried out；
Utilize the second firing equipment 7 second time to be heated to 75 DEG C, be then fed in stirring storage juice container 8, add filter aid,
Stirring, filter aid stores container 9 from filter aid,
Deliver to Filter Press, it is thus achieved that filtrate and filter cake.
Described lime milk concentration is 20 ° of Be.
The addition of described filter aid is the 2.5% of film-filter concentration liquid weight.
Embodiment 7
A kind of processing means of embrane method clarification sugaring film-filter concentration liquid,
Tentatively mix container the 2, first firing equipment 4 including the lime cream being sequentially connected with, gas liquid reaction tank 6, second heats
Equipment 7, stirring storage juice container 8 and pressure filter 12,
Also including that lime cream stores container 3, carbon dioxide air supply source 5 and filter aid and stores container 9, lime cream stores container
3 are connected simultaneously to lime cream tentatively mixes container 2 and gas-liquid retort 6, and carbon dioxide air supply source 5 is connected to gas liquid reaction tank 6,
Filter aid stores container 9 and is connected to stirring storage juice container 8.
Described lime cream tentatively mixes the film-filter concentration liquid outlet of the feeding mouth of container 2 and embrane method sugar clarification workshop section 1 even
Connect.
The filtrate (liquid of described pressure filter 12 is connected to filtrate storage bin 11, and filtered solid outlet is connected to filter cake and stacks field 10.
Described carbon dioxide air supply source 5 is sugar refinery flue gas after udst separation.
Embodiment 1～6 produces for utilizing the processing means of embrane method clarification sugaring film-filter concentration liquid described in the present embodiment
Example.
Claims (8)
1. the processing method of an embrane method clarification sugaring film-filter concentration liquid, it is characterised in that comprise the steps:
In film-filter concentration liquid, add lime cream regulation pH to 7.0～7.5 for the first time, be then heated to 45～55 DEG C for the first time,
Second time adds lime cream regulation pH to 11.5～13.0 again；It is passed through carbon dioxide until pH=8.2～8.4；For the second time
It is heated to 70～80 DEG C, adds filter aid, stir, deliver to Filter Press, it is thus achieved that filtrate and filter cake.
2. embrane method clarifies the processing method of sugaring film-filter concentration liquid as claimed in claim 1, it is characterised in that described lime cream is dense
Degree is 5～30 ° of Be.
3. embrane method clarifies the processing method of sugaring film-filter concentration liquid as claimed in claim 1, it is characterised in that described filter aid
Addition is the 1.5～3.5% of film-filter concentration liquid weight.
4. embrane method clarifies the processing method of sugaring film-filter concentration liquid as claimed in claim 1, it is characterised in that described filter aid is
Kieselguhr or sugar refinery bagasse and diatomaceous mixture.
5. the processing means of an embrane method clarification sugaring film-filter concentration liquid, it is characterised in that
Tentatively mix container, the first firing equipment, gas liquid reaction tank, the second firing equipment including the lime cream being sequentially connected with, stir
Mix storage juice container and pressure filter,
Also including that lime cream stores container, carbon dioxide air supply source and filter aid and stores container, lime cream stores container and connects simultaneously
Being connected to lime cream and tentatively mix container and gas-liquid retort, carbon dioxide air supply source is connected to gas liquid reaction tank, and filter aid stores
Container is connected to stirring storage juice container.
6. embrane method clarifies the processing means of sugaring film-filter concentration liquid as claimed in claim 5, it is characterised in that at the beginning of described lime cream
The feeding mouth of step mixing container exports with the film-filter concentration liquid of embrane method sugar clarification workshop section and is connected.
7. embrane method clarifies the processing means of sugaring film-filter concentration liquid as claimed in claim 5, it is characterised in that described pressure filter
Filtrate (liquid is connected to filtrate storage bin, and filtered solid outlet is connected to filter cake and stacks field.
8. embrane method clarifies the processing means of sugaring film-filter concentration liquid as claimed in claim 5, it is characterised in that described carbon dioxide
Air supply source is sugar refinery flue gas after udst separation.
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| CN201610278570.6A CN105906117A (en) | 2016-04-29 | 2016-04-29 | Treatment method and apparatus for membrane filtration concentrate for membrane-process clarification sugar production |
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| CN107760804A (en) * | 2017-11-27 | 2018-03-06 | 广西大学 | A kind of processing method of embrane method processing sugar-cane juice trapped fluid |
| CN107937628A (en) * | 2017-05-23 | 2018-04-20 | 中国科学院过程工程研究所 | The cane sugar manufacture system and its processing method that a kind of full constituent utilizes |
| CN109259051A (en) * | 2018-09-21 | 2019-01-25 | 安阳市豫鑫木糖醇科技有限公司 | A method of with colloid in carbon dioxide gas removal xylitol solution |
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Cited By (3)
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| CN107937628A (en) * | 2017-05-23 | 2018-04-20 | 中国科学院过程工程研究所 | The cane sugar manufacture system and its processing method that a kind of full constituent utilizes |
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| CN109259051A (en) * | 2018-09-21 | 2019-01-25 | 安阳市豫鑫木糖醇科技有限公司 | A method of with colloid in carbon dioxide gas removal xylitol solution |
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