CN220887244U - Waste liquid treatment system in xylose preparation technology - Google Patents
Waste liquid treatment system in xylose preparation technology Download PDFInfo
- Publication number
- CN220887244U CN220887244U CN202322371094.0U CN202322371094U CN220887244U CN 220887244 U CN220887244 U CN 220887244U CN 202322371094 U CN202322371094 U CN 202322371094U CN 220887244 U CN220887244 U CN 220887244U
- Authority
- CN
- China
- Prior art keywords
- ion exchange
- waste liquid
- reverse osmosis
- xylose
- station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- SRBFZHDQGSBBOR-IOVATXLUSA-N D-xylopyranose Chemical compound O[C@@H]1COC(O)[C@H](O)[C@H]1O SRBFZHDQGSBBOR-IOVATXLUSA-N 0.000 title claims abstract description 106
- 239000007788 liquid Substances 0.000 title claims abstract description 91
- 239000002699 waste material Substances 0.000 title claims abstract description 57
- PYMYPHUHKUWMLA-UHFFFAOYSA-N arabinose Natural products OCC(O)C(O)C(O)C=O PYMYPHUHKUWMLA-UHFFFAOYSA-N 0.000 title claims abstract description 53
- SRBFZHDQGSBBOR-UHFFFAOYSA-N beta-D-Pyranose-Lyxose Natural products OC1COC(O)C(O)C1O SRBFZHDQGSBBOR-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 238000002360 preparation method Methods 0.000 title claims abstract description 37
- 238000005516 engineering process Methods 0.000 title claims description 3
- 238000005342 ion exchange Methods 0.000 claims abstract description 89
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 45
- 238000000909 electrodialysis Methods 0.000 claims abstract description 33
- 238000003860 storage Methods 0.000 claims abstract description 30
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 26
- 239000002351 wastewater Substances 0.000 claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 230000007062 hydrolysis Effects 0.000 claims description 21
- 238000006460 hydrolysis reaction Methods 0.000 claims description 21
- 229920002488 Hemicellulose Polymers 0.000 claims description 17
- 238000000108 ultra-filtration Methods 0.000 claims description 17
- 239000003513 alkali Substances 0.000 claims description 16
- 238000002425 crystallisation Methods 0.000 claims description 15
- 230000008025 crystallization Effects 0.000 claims description 15
- 238000001035 drying Methods 0.000 claims description 11
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 9
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 9
- 235000011152 sodium sulphate Nutrition 0.000 claims description 9
- 238000011084 recovery Methods 0.000 claims description 5
- 239000000706 filtrate Substances 0.000 claims description 4
- 239000012065 filter cake Substances 0.000 claims description 3
- 239000013505 freshwater Substances 0.000 claims description 3
- 239000012452 mother liquor Substances 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 238000000034 method Methods 0.000 description 7
- 229920000297 Rayon Polymers 0.000 description 6
- 229920002678 cellulose Polymers 0.000 description 5
- 239000001913 cellulose Substances 0.000 description 5
- 239000002253 acid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000007380 fibre production Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 238000005903 acid hydrolysis reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000004042 decolorization Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The utility model discloses a waste liquid treatment system in a xylose preparation process, and belongs to the technical field of waste liquid treatment in a xylose production process. A waste liquid treatment system in a xylose preparation process is arranged in the xylose preparation system and comprises an electrodialysis waste water storage tank connected with a waste liquid outlet of an electrodialysis device, an ion exchange waste water storage tank connected with a waste liquid outlet of an ion exchange device, a neutralization device, a reverse osmosis liquid concentration device and a centrifugal device, wherein a continuous passage for waste liquid treatment and reuse is formed among the neutralization device, the reverse osmosis liquid concentration device, the centrifugal device and the decolorizing device. On one hand, the waste liquid formed in the xylose preparation process is effectively treated, namely, the environmental protection pressure is reduced, and the treatment cost is controlled; on the other hand, sugar is recovered and returned to the xylose preparation process, so that the yield of the xylose preparation process is improved, the sugar running amount is reduced, and the circular economy and the environmental protection economy are realized.
Description
Technical Field
The utility model relates to a waste liquid treatment system, in particular to a waste liquid treatment recovery and reutilization system in a xylose preparation process, and belongs to the technical field of waste liquid treatment in a xylose production process.
Background
The viscose is a chemical fiber which is processed by using natural cellulose-containing polymer materials such as wood pulp, cotton pulp and the like through chemical and mechanical methods. The preparation process of the viscose fiber can be divided into five working sections of pulp preparation, viscose preparation, spinning, fiber forming and post-treatment. In the viscose preparation section, a high-concentration (about 20%) sodium hydroxide solution is added into pulp, and cellulose reacts with sodium hydroxide to generate alkali cellulose, so that hemicellulose is dissolved out; at the same time, the pulp swells and hemicellulose and other impurities in the pulp are dissolved out. In the subsequent pressing process, the alkali cellulose is pressed and filtered by using a plate-and-frame filter press, the obtained solid alkali cellulose is used for the next production, and the filtrate is alkali liquor in which hemicellulose is dissolved. The sodium hydroxide content in the alkali liquor is about 150-200g/L, and the hemicellulose content is more than or equal to 35g/L; and then, recycling most of sodium hydroxide through a bipolar membrane to finally obtain the waste alkali liquor containing hemicellulose, wherein the content of the sodium hydroxide is about 35-45g/L and the content of the hemicellulose is about 65-75g/L. The waste alkali liquor containing hemicellulose has the characteristics of high COD, large turbidity, high alkali content and the like, and a large amount of acid is consumed for neutralization in the direct treatment and discharge, and meanwhile, environmental pollution and resource waste are caused. Therefore, hemicellulose is considered to be separated and hydrolyzed to prepare xylose, so that waste is changed into valuable.
In the process for preparing xylose by taking waste alkali liquor containing hemicellulose as a raw material, the main working procedures comprise: hydrolysis, decolorization, electrodialysis, ion exchange, evaporation, crystallization and the like, wherein a large amount of high-acid, high-salt and high-sugar waste liquid is formed in the procedures of electrodialysis, ion exchange and the like, the biochemical treatment process is complex, the treatment cost is high, the environmental pollution is high, and meanwhile, the sugar leakage amount is large.
Disclosure of Invention
The utility model aims to solve the technical problems and provides a waste liquid treatment system in a xylose preparation process by combining complex components of hemicellulose hydrolysis liquid. On one hand, the waste liquid formed in the xylose preparation process is effectively treated, namely, the environmental protection pressure is reduced, and the treatment cost is controlled; on the other hand, sugar is recovered and returned to the xylose preparation process, so that the yield of the xylose preparation process is improved, the sugar running amount is reduced, and the circular economy and the environmental protection economy are realized.
In order to achieve the technical purpose, the following technical scheme is provided:
The xylose preparation process comprises a waste liquid treatment system, a xylose preparation system, a hydrolysis device, a decolorizing device, an ultrafiltration device, an electrodialysis device, an ion exchange liquid concentration device, a crystallization device, a separation device and a drying device, wherein a continuous passage for preparing xylose from alkali-containing hemicellulose liquid is formed among the hydrolysis device, the decolorizing full-time device, the ultrafiltration device, the electrodialysis device, the ion exchange liquid concentration device, the crystallization device, the separation device and the drying device;
The waste liquid treatment system comprises an electrodialysis waste water storage tank connected with a waste liquid outlet of the electrodialysis device, an ion exchange waste water storage tank connected with a waste liquid outlet of the ion exchange device, a neutralization device, a reverse osmosis liquid concentration device and a centrifugal device, wherein the electrodialysis waste water storage tank and the ion exchange waste water storage tank are arranged at the front side of a station of the neutralization device, and the neutralization device is connected with the electrodialysis waste water storage tank and the ion exchange waste water storage tank;
the reverse osmosis device is arranged at the rear side of a station of the neutralization device, and the neutralization device is connected with the reverse osmosis device;
The reverse osmosis liquid concentration device is arranged at the rear side of a station of the reverse osmosis device, and the reverse osmosis device is connected with the reverse osmosis liquid concentration device;
the centrifugal device is arranged at the rear side of a station of the reverse osmosis liquid concentration device, and the reverse osmosis liquid concentration device is connected with the centrifugal device;
The outlet of mother liquor (salt-containing sugar liquor) on the centrifugal device is connected with a decoloring device;
A continuous passage for waste liquid treatment and reuse is formed among the neutralization device, the reverse osmosis device, the concentration device, the centrifugal device and the decoloring device.
Preferably, the dilute outlet of the reverse osmosis device is connected with a fresh water recovery system.
Preferably, a filter cake outlet on the centrifugal device is connected with a sodium sulfate storage tank, so that sodium sulfate is recovered. According to actual demands, the sodium sulfate storage tank is connected with a viscose fiber production system.
Preferably, the decoloring device comprises a decoloring device I and a decoloring device II, the ion exchange device comprises an ion exchange device I, an ion exchange device II and an ion exchange device III, and the ion exchange liquid concentrating device comprises an MVR concentrating device and a vacuum concentrating device;
the decoloring device I is arranged between the hydrolysis device and the ultrafiltration device, and is positioned at the rear side of a station of the hydrolysis device, and is positioned at the front side of a station of the ultrafiltration device;
The ion exchange device I is arranged at the rear side of a station of the electrodialysis device, the MVR concentration device is arranged at the rear side of the station of the ion exchange device I, the decoloring device II is arranged at the rear side of the station of the MVR concentration device, the ion exchange device II is arranged at the rear side of the station of the decoloring device II, the ion exchange device III is arranged at the rear side of the station of the ion exchange device II, and the vacuum concentration device is arranged at the rear side of the station of the ion exchange device III; the vacuum concentration device is positioned at the front side of the station of the crystallization device;
A continuous passage for preparing xylose from alkali-containing hemicellulose liquid is formed among the hydrolysis device, the decoloring device I, the ultrafiltration device, the electrodialysis device, the ion exchange device I, the MVR concentration device, the decoloring device II, the ion exchange device III, the vacuum concentration device, the crystallization device, the separation device and the drying device.
Preferably, a filtrate outlet on the centrifugal device is connected with the decoloring device I.
Preferably, the waste liquid outlet of the ion exchange device I, the waste liquid outlet of the ion exchange device II and the waste liquid outlet of the ion exchange device III are all connected with an ion exchange waste water storage tank.
The relation of the upper position, the middle position, the rear position, the front position and the like in the technical scheme is defined according to the condition in the actual use state, is a conventional term in the technical field, and is also a conventional term in the actual use process of a worker in the field.
In the description of the present technical solution, it should be noted that, unless explicitly stated and defined otherwise, reference to "arrangement" should be construed broadly, and it is possible for a person skilled in the art to understand the specific meaning of the above terms in the present utility model in a specific case.
By adopting the technical scheme, the beneficial effects brought are as follows:
In the utility model, the continuous passage for waste liquid treatment and reuse is ensured among the neutralization device, the reverse osmosis device, the concentration device, the centrifugal device and the decoloring device by arranging the neutralization device, the reverse osmosis device, the concentration device, the centrifugal device and the decoloring device. On one hand, waste liquid formed in the xylose preparation process is effectively treated, so that the environmental protection pressure is reduced, and the treatment cost is controlled; on the other hand, sugar is recovered and returned to the xylose preparation process, so that the yield of the xylose preparation process is improved, the sugar running amount is reduced, and the circular economy and the environmental protection economy are realized.
Drawings
FIG. 1 is a block diagram of the structure of the present utility model;
FIG. 2 is a block diagram of the arrangement of the present utility model in a xylose production system (one);
FIG. 3 is a block diagram (II) of the arrangement of the present utility model in a xylose production system;
In the figure, 1, a hydrolysis device, 2, a decolorizer, 21, a decolorizer I, 22, a decolorizer II, 3, an ultrafiltration device, 4, an electrodialysis device, 5, an ion exchange device, 51, an ion exchange device I, 52, an ion exchange device II, 53, an ion exchange device III, 6, an ion exchange liquid concentration device, 61, an MVR concentration device, 62, a vacuum concentration device, 7, a crystallization device, 8, a separation device, 9, a drying device, 10, an electrodialysis wastewater storage tank, 11, an ion exchange wastewater storage tank, 12, a neutralization device, 13, a reverse osmosis device, 14, a reverse osmosis liquid concentration device, 15 and a centrifugation device are shown.
Detailed Description
In the following, it is obvious that the embodiments described are only some embodiments of the present utility model, but not all embodiments, by clearly and completely describing the technical solutions in the embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
In the embodiment, the complex components of the hemicellulose hydrolysis liquid are considered, and the sugar running cannot be controlled at a lower level, so that if the acid and xylose in the electrodialysis concentrated water can be recovered, the economic benefit is obviously improved; in addition, the discharge of the waste ion exchange liquid is also a big problem, and for this purpose, it is proposed that:
As shown in fig. 1-2: a waste liquid treatment system in a xylose preparation process is arranged in the xylose preparation system, and the xylose preparation system comprises a hydrolysis device 1, a decoloring device 2, an ultrafiltration device 3, an electrodialysis device 4, an ion exchange device 5, an ion exchange liquid concentration device 6, a crystallization device 7, a separation device 8 and a drying device 9, wherein a continuous passage for preparing xylose from alkali-containing hemicellulose liquid is formed among the hydrolysis device 1, the decoloring full-time, the ultrafiltration device 3, the electrodialysis device 4, the ion exchange device 5, the ion exchange liquid concentration device 6, the crystallization device 7, the separation device 8 and the drying device 9;
The waste liquid treatment system comprises an electrodialysis waste water storage tank 10 connected with a waste liquid outlet of the electrodialysis device 4, an ion exchange waste water storage tank 11 connected with a waste liquid outlet of the ion exchange device 5, a neutralization device 12, a reverse osmosis device 13, a reverse osmosis liquid concentration device 14 and a centrifugal device 15, wherein the electrodialysis waste water storage tank 10 and the ion exchange waste water storage tank 11 are arranged at the front side of a station of the neutralization device 12, and the neutralization device 12 is connected with the electrodialysis waste water storage tank 10 and the ion exchange waste water storage tank 11;
The reverse osmosis device 13 is arranged at the rear side of the station of the neutralization device 12, and the neutralization device 12 is connected with the reverse osmosis device 13;
The reverse osmosis liquid concentration device 14 is arranged at the rear side of the station of the reverse osmosis device 13, and the reverse osmosis device 13 is connected with the reverse osmosis liquid concentration device 14; the reverse osmosis liquid concentration device 14 can adopt MVR concentration mode;
The centrifugal device 15 is arranged at the rear side of the station of the reverse osmosis liquid concentration device 14, and the reverse osmosis liquid concentration device 14 is connected with the centrifugal device 15;
The outlet of mother liquor (sugar liquor containing salt) on the centrifugal device 15 is connected with the decoloring device 2;
A continuous path for waste liquid treatment and reuse is formed among the neutralization device 12, the reverse osmosis device 13, the concentration device, the centrifugal device 15 and the decoloring device 2.
The system can ensure that the salt in the waste liquid can be fully discharged, and xylose can be fully recovered. Such as: in the hydrolysis step of the xylose production process, sulfuric acid hydrolysis is generally used, and for this purpose, the electrodialysis concentrate is neutralized with an alkali based on a neutralization step involving the neutralization device 12; the reverse osmosis process of the reverse osmosis device 13 can effectively treat the ion exchange wastewater and has high efficiency.
Example 2
On the basis of the embodiment 1, the embodiment further treats the fresh water and the sodium sulfate formed in the xylose waste liquid treatment to improve the xylose waste liquid treatment quality, improve the utilization rate of beneficial substances and reduce the environmental protection pressure.
The dilute outlet of the reverse osmosis device 13 is connected with a dilute recovery system, wherein the dilute is clear and transparent.
The filter cake outlet on the centrifugal device 15 is connected with a sodium sulfate storage tank to realize the recovery of sodium sulfate. According to actual demands, the sodium sulfate storage tank is connected with a viscose fiber production system. During centrifugation, 80% of the sodium sulfate can be recovered.
Example 3
In order to improve the xylose preparation efficiency and improve the xylose purity, the embodiment provides a xylose preparation system.
As shown in fig. 3: a xylose preparation system, comprising a hydrolysis device 1, a decolorizing device 2, an ultrafiltration device 3, an electrodialysis device 4, an ion exchange device 5, an ion exchange liquid concentration device 6, a crystallization device 7, a separation device 8 and a drying device 9, wherein the decolorizing device 2 comprises a decolorizing device I21 and a decolorizing device II 22, the ion exchange device 5 comprises an ion exchange device I51, an ion exchange device II 52 and an ion exchange device III 53, and the ion exchange liquid concentration device 6 comprises an MVR concentration device 61 and a vacuum concentration device 62;
The decoloring device I21 is arranged between the hydrolysis device 1 and the ultrafiltration device 3, the decoloring device I21 is positioned at the rear side of the station of the hydrolysis device 1, and the decoloring device I21 is positioned at the front side of the station of the ultrafiltration device 3; the ion exchange device I51 is arranged at the rear side of the station of the electrodialysis device 4, the MVR concentration device 61 is arranged at the rear side of the station of the ion exchange device I51, the decoloring device II 22 is arranged at the rear side of the station of the MVR concentration device 61, the ion exchange device II 52 is arranged at the rear side of the station of the decoloring device II 22, the ion exchange device III 53 is arranged at the rear side of the station of the ion exchange device II 52, and the vacuum concentration device 62 is arranged at the rear side of the station of the ion exchange device III 53; the vacuum concentration device 62 is positioned at the front side of the station of the crystallization device 7; a continuous path for preparing xylose from alkali-containing hemicellulose liquid is formed among the hydrolysis device 1, the decolorizing device I21, the ultrafiltration device 3, the electrodialysis device 4, the ion exchange device I51, the MVR concentration device 61, the decolorizing device II 22, the ion exchange device II 52, the ion exchange device III 53, the vacuum concentration device 62, the crystallization device 7, the separation device 8 and the drying device 9.
On the basis of the embodiment 1-2, the waste liquid formed in the xylose preparation system is treated in a targeted manner and then recycled to a specific process, and on one hand, the waste liquid is effectively treated, so that the environmental protection pressure is reduced, and the treatment cost is controlled; on the other hand, sugar is recovered and returned to the xylose preparation process, so that the yield of the xylose preparation process is improved, the sugar running amount is reduced, and the circular economy and the environmental protection economy are realized. Namely, further define:
the filtrate outlet on the centrifugal device 15 is connected with a decoloring device I21;
The waste liquid outlet of the ion exchange device I51, the waste liquid outlet of the ion exchange device II 52 and the waste liquid outlet of the ion exchange device III 53 are connected with the ion exchange waste water storage tank 11.
Claims (6)
1. Waste liquid treatment system in xylose preparation technology sets up in the xylose preparation system, the xylose system includes hydrolysis unit (1), decoloration device (2), ultrafiltration device (3), electrodialysis device (4), ion exchange unit (5), ion exchange liquid enrichment facility (6), crystallization device (7), separator (8) and drying device (9), hydrolysis unit (1), decoloration full-time, ultrafiltration device (3), electrodialysis device (4), ion exchange unit (5), ion exchange liquid enrichment facility (6), crystallization device (7), form between separator (8) and the drying device (9) with contain alkali hemicellulose liquid continuous passageway of preparation xylose, its characterized in that:
The waste liquid treatment system comprises an electrodialysis waste water storage tank (10) connected with a waste liquid outlet of the electrodialysis device (4), an ion exchange waste water storage tank (11) connected with a waste liquid outlet of the ion exchange device (5), a neutralization device (12), a reverse osmosis device (13), a reverse osmosis liquid concentration device (14) and a centrifugal device (15), wherein the electrodialysis waste water storage tank (10) and the ion exchange waste water storage tank (11) are arranged at the front side of a station of the neutralization device (12), and the neutralization device (12) is connected with the electrodialysis waste water storage tank (10) and the ion exchange waste water storage tank (11);
the reverse osmosis device (13) is arranged at the rear side of a station of the neutralization device (12), and the neutralization device (12) is connected with the reverse osmosis device (13);
The reverse osmosis liquid concentration device (14) is arranged at the rear side of a station of the reverse osmosis device (13), and the reverse osmosis device (13) is connected with the reverse osmosis liquid concentration device (14);
The centrifugal device (15) is arranged at the rear side of a station of the reverse osmosis liquid concentration device (14), and the reverse osmosis liquid concentration device (14) is connected with the centrifugal device (15);
The mother liquor outlet on the centrifugal device (15) is connected with the decoloring device (2);
A continuous passage for waste liquid treatment and reuse is formed among the neutralization device (12), the reverse osmosis device (13), the reverse osmosis liquid concentration device (14), the centrifugal device (15) and the decoloring device (2).
2. The system for treating waste liquid in xylose preparation process according to claim 1, characterized in that: the dilute outlet of the reverse osmosis device (13) is connected with a fresh water recovery system.
3. The system for treating waste liquid in xylose production process according to claim 1 or 2, characterized in that: and a filter cake outlet on the centrifugal device (15) is connected with a sodium sulfate storage tank.
4. The system for treating waste liquid in xylose preparation process according to claim 1, characterized in that: the decoloring device (2) comprises a decoloring device I (21) and a decoloring device II (22), the ion exchange device (5) comprises an ion exchange device I (51), an ion exchange device II (52) and an ion exchange device III (53), and the ion exchange liquid concentration device (6) comprises an MVR concentration device (61) and a vacuum concentration device (62);
The decoloring device I (21) is arranged between the hydrolysis device (1) and the ultrafiltration device (3), the decoloring device I (21) is positioned at the rear side of a station of the hydrolysis device (1), and the decoloring device I (21) is positioned at the front side of a station of the ultrafiltration device (3);
The ion exchange device I (51) is arranged at the rear side of a station of the electrodialysis device (4), the MVR concentration device (61) is arranged at the rear side of the station of the ion exchange device I (51), the decoloring device II (22) is arranged at the rear side of the station of the MVR concentration device (61), the ion exchange device II (52) is arranged at the rear side of the station of the decoloring device II (22), the ion exchange device III (53) is arranged at the rear side of the station of the ion exchange device II (52), and the vacuum concentration device (62) is arranged at the rear side of the station of the ion exchange device III (53); the vacuum concentration device (62) is positioned at the front side of the station of the crystallization device (7);
A continuous passage for preparing xylose from alkali-containing hemicellulose liquid is formed among the hydrolysis device (1), the decolorizing device I (21), the ultrafiltration device (3), the electrodialysis device (4), the ion exchange device I (51), the MVR concentration device (61), the decolorizing device II (22), the ion exchange device II (52), the ion exchange device III (53), the vacuum concentration device (62), the crystallization device (7), the separation device (8) and the drying device (9).
5. The system for treating waste liquid in xylose preparation process according to claim 4, wherein: the filtrate outlet on the centrifugal device (15) is connected with a decoloring device I (21).
6. The system for treating waste liquid in xylose production process according to claim 4 or 5, characterized in that: the waste liquid outlet of the ion exchange device I (51), the waste liquid outlet of the ion exchange device II (52) and the waste liquid outlet of the ion exchange device III (53) are connected with the ion exchange waste water storage tank (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322371094.0U CN220887244U (en) | 2023-09-01 | 2023-09-01 | Waste liquid treatment system in xylose preparation technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322371094.0U CN220887244U (en) | 2023-09-01 | 2023-09-01 | Waste liquid treatment system in xylose preparation technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220887244U true CN220887244U (en) | 2024-05-03 |
Family
ID=90875008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322371094.0U Active CN220887244U (en) | 2023-09-01 | 2023-09-01 | Waste liquid treatment system in xylose preparation technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220887244U (en) |
-
2023
- 2023-09-01 CN CN202322371094.0U patent/CN220887244U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104498640B (en) | A kind of technique using plant refuse as raw material coproduction xylose, microcrystalline cellulose and sodium lignin sulfonate | |
| CN102643935B (en) | Method for preparing xylose by using squeezed waste alkali liquor in viscose fiber production process | |
| US8545685B2 (en) | Cleaning process of producing lactic acid | |
| CN102452898B (en) | Method for producing crystalline xylitol by using membrane technology and indirect electroreduction method | |
| CN109133448B (en) | Circulating environment-friendly treatment process and system for viscose waste liquid | |
| CN104099431A (en) | Method for extracting xylose from viscoce chemical fiber squeezed alkali liquor | |
| CN103388198B (en) | A kind of bipolar membrane electrodialysis method is produced the method for soda acid from viscose rayon sodium sulphate waste liquid | |
| CN102976450A (en) | Process for recovering alkali from squeezed waste liquid in viscose fiber production | |
| CN109439695B (en) | Method for co-producing xylooligosaccharide, xylose and xylitol by industrial waste | |
| CN103131802A (en) | Process for producing xylose by lignocellulose biomass | |
| CN105969916A (en) | Method for preparing xylose by taking squeezed alkali liquid obtained in production of viscose as raw material | |
| CN115029401A (en) | Method for co-production of fulvic acid organic fertilizer by straw sugar production | |
| CN210481411U (en) | Separation system for preparing xylose | |
| CN112725942A (en) | Viscose sodium sulfate waste liquid regeneration and recycling process | |
| CN103341321A (en) | Viscose sodium sulfate waste liquor acid and alkali recycling technology by virtue of bipolar membrane electrodialysis method | |
| CN220887244U (en) | Waste liquid treatment system in xylose preparation technology | |
| CN110564898B (en) | Electrodialysis and chromatography combined process for preparing xylose | |
| CN218860763U (en) | System for co-producing superior xylose and high-end caramel pigment by utilizing corncobs | |
| CN109437121B (en) | Multistage treatment method for viscose sodium sulfate waste liquid | |
| CN109355440B (en) | System and process for producing beet sugar by continuous film | |
| CN104150519B (en) | A kind of method utilizing sodium sulfate waste liquid to prepare barium sulfate and sodium carbonate | |
| CN115198037B (en) | Washing water regeneration process of ion exchange resin in xylose production process | |
| CN211770639U (en) | Viscose staple fiber front end waste water resource utilization system | |
| CN111018213A (en) | Non-wood plant papermaking black liquor recycling treatment system and treatment process | |
| CN115198038B (en) | Process for recycling semi-fiber xylose-making electrodialysis sugar-containing wastewater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |