CN114516700A - Furfural abandonment treatment system - Google Patents
Furfural abandonment treatment system Download PDFInfo
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- CN114516700A CN114516700A CN202210158011.7A CN202210158011A CN114516700A CN 114516700 A CN114516700 A CN 114516700A CN 202210158011 A CN202210158011 A CN 202210158011A CN 114516700 A CN114516700 A CN 114516700A
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- China
- Prior art keywords
- sewage
- steam
- furfural
- generated
- waste water
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- 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.)
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- HYBBIBNJHNGZAN-UHFFFAOYSA-N furfural Chemical compound O=CC1=CC=CO1 HYBBIBNJHNGZAN-UHFFFAOYSA-N 0.000 title claims abstract description 94
- 239000010865 sewage Substances 0.000 claims abstract description 72
- 238000001704 evaporation Methods 0.000 claims abstract description 37
- 230000008020 evaporation Effects 0.000 claims abstract description 35
- 239000007788 liquid Substances 0.000 claims abstract description 31
- 239000002351 wastewater Substances 0.000 claims abstract description 24
- 238000004821 distillation Methods 0.000 claims abstract description 21
- 230000007062 hydrolysis Effects 0.000 claims abstract description 17
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000007670 refining Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 9
- 238000004062 sedimentation Methods 0.000 claims abstract description 9
- 239000002699 waste material Substances 0.000 claims abstract description 9
- 238000005086 pumping Methods 0.000 claims abstract description 8
- 238000002485 combustion reaction Methods 0.000 claims abstract description 6
- 239000000446 fuel Substances 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 238000001556 precipitation Methods 0.000 claims abstract description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- 239000013049 sediment Substances 0.000 claims description 3
- XPFVYQJUAUNWIW-UHFFFAOYSA-N furfuryl alcohol Chemical compound OCC1=CC=CO1 XPFVYQJUAUNWIW-UHFFFAOYSA-N 0.000 description 3
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 150000002972 pentoses Chemical class 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- WIEXMPDBTYDSQF-UHFFFAOYSA-N 1,3-bis(furan-2-yl)propan-2-one Chemical compound C=1C=COC=1CC(=O)CC1=CC=CO1 WIEXMPDBTYDSQF-UHFFFAOYSA-N 0.000 description 1
- 241000609240 Ambelania acida Species 0.000 description 1
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 239000010905 bagasse Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000007849 furan resin Substances 0.000 description 1
- 229920005546 furfural resin Polymers 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 150000002772 monosaccharides Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
-
- 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
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
- C07D307/34—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D307/38—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D307/40—Radicals substituted by oxygen atoms
- C07D307/46—Doubly bound oxygen atoms, or two oxygen atoms singly bound to the same carbon atom
- C07D307/48—Furfural
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
-
- 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
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention provides a furfural waste treatment system which mainly comprises a sewage evaporator, a sewage buffer tank and a vapor-liquid separator, wherein waste water is discharged into a waste water tank for precipitation, then a pump is used for pumping the waste water into a heat exchanger, the waste water exchanges heat with primary steam of a boiler, and secondary steam generated by the waste water is introduced into a hydrolysis kettle and is used as steam for hydrolysis. The low-pressure steam generated in the invention is used for refining furfural, condensed water in a steam expansion tank is directly pumped into a boiler by a pump, the evaporation residual liquid in an evaporation system is double-effect evaporation residual liquid, residues are used as fuel to be fed into the boiler for combustion after being distilled by a residual liquid distillation kettle, sewage generated in the refining process directly enters a furfural primary distillation tower to further extract furfural, water and other impurities in the sewage are used as tower bottom sewage to be discharged from the evaporation system from the bottom of the primary distillation tower to enter a sewage sedimentation tank, the whole sewage is in a closed cycle state, and zero discharge of the waste water generated in furfural production is realized.
Description
Technical Field
The invention relates to the technical field of furfural production, in particular to a furfural waste treatment system.
Background
Furfural, also known as furfural, is a basic organic chemical raw material with a wide range of applications. Chemical products directly and indirectly synthesized by the method are more than 1600, and furfuryl alcohol, maleic anhydride, tetrahydrofuran, furan resin, furfural resin, furfuryl ketone resin and the like are products synthesized by taking furfural as a raw material and are widely applied to the industries of synthetic plastics, medicines, pesticides and the like; it is also an excellent organic solvent for refining high-grade lubricating oil and diesel oil. Furfural is also one of the important chemical products for earning foreign exchange in China.
The furfural is prepared by hydrolyzing high-glycan (cellulose and hemicellulose) in bagasse, rice hull, corn cob and wood chip at a certain temperature under the action of a catalyst to obtain pentose (monosaccharide), and further dehydrating the pentose. Wherein the content of polypentaose in the corncob is the largest.
The furfural production process is simple and easy to master, but has serious pollution, particularly water pollution, and no effective solution is available at present.
Disclosure of Invention
The invention aims to provide a furfural waste treatment system to solve the problems.
In order to achieve the purpose, the invention is realized by the following technical scheme: a furfural waste treatment system mainly comprises a sewage evaporator, a sewage buffer tank and a vapor-liquid separator, wherein waste water is discharged into a waste water tank for precipitation, then the waste water is pumped into a heat exchanger by a pump, the waste water exchanges heat with primary steam of a boiler, and secondary steam generated by the waste water is introduced into a hydrolysis kettle and is used as steam for hydrolysis;
the specific process is as follows: the furfural production process comprises the steps of removing sediments and suspended matters in sewage after the sewage passes through a sewage sedimentation tank, pumping the sewage into a sewage evaporation system consisting of a sewage evaporator and a sewage buffer tank by a sewage pump, carrying out heat exchange between the sewage and primary steam from a boiler in the sewage evaporation system, introducing secondary steam containing acetic acid generated by sewage evaporation as steam for hydrolysis into a hydrolysis kettle as a heat source and carrying out generated furfural in time, introducing the primary steam into a steam-liquid separator after the primary steam passes through the sewage evaporation system, introducing steam generated by the steam-liquid separator into the buffer tank as supplementary steam of the secondary steam for hydrolysis, introducing steam condensate water generated by the steam-liquid separator and the steam buffer tank into a steam expansion tank, directly pumping the condensate water in the steam expansion tank into the boiler by the pump, and evaporating residual liquid in the evaporation system to be double-effect evaporation residual liquid, after distillation in a residual liquid distillation kettle, the residue is used as fuel and sent to a boiler for combustion, the sewage generated in the refining process directly enters a furfural primary distillation tower for further extracting furfural, and water and other impurities in the sewage are used as tower bottom sewage and discharged from the bottom of the primary distillation tower to an evaporation system and enter a sewage sedimentation tank.
Preferably, steam generated by the vapor-liquid separator enters the buffer tank and can also be used for furfural refining and other heat sources.
The invention provides a furfural waste treatment system. The method has the following beneficial effects:
the low-pressure steam generated in the invention is used for refining furfural, condensed water in a steam expansion tank is directly pumped into a boiler by a pump, the evaporation residual liquid in an evaporation system is double-effect evaporation residual liquid, residues are used as fuel to be fed into the boiler for combustion after being distilled by a residual liquid distillation kettle, sewage generated in the refining process directly enters a furfural primary distillation tower to further extract furfural, water and other impurities in the sewage are used as tower bottom sewage to be discharged from the evaporation system from the bottom of the primary distillation tower to enter a sewage sedimentation tank, the whole sewage is in a closed cycle state, and zero discharge of the waste water generated in furfural production is realized.
Drawings
FIG. 1 is a process flow diagram of closed cycle of furfural production wastewater;
fig. 2 is a schematic structural diagram of a furfural waste treatment system sewage evaporator according to the present invention.
Detailed Description
The invention is further described with reference to the following drawings and detailed description:
in the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1-2, the furfural waste treatment system mainly comprises a sewage evaporator, a sewage buffer tank and a vapor-liquid separator, wherein wastewater is discharged into a wastewater tank for precipitation, then the wastewater is pumped into a heat exchanger by a pump, the wastewater exchanges heat with primary steam of a boiler, and secondary steam generated by the wastewater is introduced into a hydrolysis kettle and is used as steam for hydrolysis;
the specific process is as follows: the furfural production process comprises the steps of removing sediments and suspended matters in sewage after the sewage passes through a sewage sedimentation tank, pumping the sewage into a sewage evaporation system consisting of a sewage evaporator and a sewage buffer tank by a sewage pump, carrying out heat exchange between the sewage and primary steam from a boiler in the sewage evaporation system, introducing secondary steam containing acetic acid generated by sewage evaporation as steam for hydrolysis into a hydrolysis kettle as a heat source and carrying out generated furfural in time, introducing the primary steam into a steam-liquid separator after the primary steam passes through the sewage evaporation system, introducing steam generated by the steam-liquid separator into the buffer tank as supplementary steam of the secondary steam for hydrolysis, introducing steam condensate water generated by the steam-liquid separator and the steam buffer tank into a steam expansion tank, directly pumping the condensate water in the steam expansion tank into the boiler by the pump, and evaporating residual liquid in the evaporation system to be double-effect evaporation residual liquid, after distillation in a residual liquid distillation still, the residue is used as fuel and sent to a boiler for combustion, sewage generated in the refining process directly enters a furfural primary distillation tower for further extracting furfural, and water and other impurities in the sewage are used as tower bottom sewage and discharged from the bottom of the primary distillation tower to an evaporation system and enter a sewage sedimentation tank.
Wherein, the steam generated by the steam-liquid separator enters the buffer tank and can also be used for furfural refining and other heat sources.
The low-pressure steam generated by the invention is used for refining furfural, the condensed water in the steam expansion tank is directly pumped into a boiler by a pump, the evaporation raffinate in the evaporation system is double-effect evaporation raffinate, the evaporation raffinate is distilled by a raffinate distillation still, the residue is used as fuel and is sent into the boiler for combustion, the sewage generated in the refining process directly enters a furfural primary distillation tower for further extracting furfural, the water and other impurities in the sewage are used as tower bottom sewage and are discharged from the evaporation system from the bottom of the primary distillation tower to enter a sewage sedimentation tank, and the whole sewage is in a closed cycle state, so that the zero discharge of the wastewater generated in the furfural production is realized.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. The furfural waste treatment system is characterized by mainly comprising a sewage evaporator, a sewage buffer tank and a vapor-liquid separator, wherein the waste water is discharged into a waste water tank for precipitation, then a pump is used for pumping the waste water into a heat exchanger, the waste water exchanges heat with primary steam of a boiler, and secondary steam generated by the waste water is introduced into a hydrolysis kettle and is used as steam for hydrolysis;
the specific process is as follows: the furfural production process comprises the steps of removing sediments and suspended matters in sewage after the sewage passes through a sewage sedimentation tank, pumping the sewage into a sewage evaporation system consisting of a sewage evaporator and a sewage buffer tank by a sewage pump, carrying out heat exchange between the sewage in the sewage evaporation system and primary steam from a boiler, introducing secondary steam containing acetic acid generated by sewage evaporation as steam for hydrolysis into a hydrolysis kettle as a heat source and carrying out generated furfural out in time, introducing the primary steam into a steam-liquid separator after passing through the sewage evaporation system, introducing steam generated by the steam-liquid separator into the buffer tank as supplementary steam for the secondary steam for hydrolysis, introducing steam condensate water generated by the steam-liquid separator and the steam buffer tank into a steam expansion tank, using the generated low-pressure steam for furfural refining, directly pumping condensate water in the steam expansion tank into the boiler by the pump, and using the evaporation residual liquid in the evaporation system as double-effect evaporation residual liquid, after distillation in a residual liquid distillation still, the residue is used as fuel and sent to a boiler for combustion, sewage generated in the refining process directly enters a furfural primary distillation tower for further extracting furfural, and water and other impurities in the sewage are used as tower bottom sewage and discharged from the bottom of the primary distillation tower to an evaporation system and enter a sewage sedimentation tank.
2. The furfural waste treatment system of claim 1 wherein: the steam generated by the steam-liquid separator enters the buffer tank and can also be used for furfural refining and other heat sources.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210158011.7A CN114516700A (en) | 2022-02-21 | 2022-02-21 | Furfural abandonment treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210158011.7A CN114516700A (en) | 2022-02-21 | 2022-02-21 | Furfural abandonment treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114516700A true CN114516700A (en) | 2022-05-20 |
Family
ID=81598753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210158011.7A Pending CN114516700A (en) | 2022-02-21 | 2022-02-21 | Furfural abandonment treatment system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114516700A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115581933A (en) * | 2022-10-19 | 2023-01-10 | 河南禾力能源有限公司 | A furfural production system and process with ultra-low steam consumption |
| CN117482871A (en) * | 2024-01-03 | 2024-02-02 | 宁津禾洁生物科技有限公司 | Furfural extraction system for recycling low-emission furfural residues |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1872726A (en) * | 2006-06-07 | 2006-12-06 | 济南圣泉集团股份有限公司 | Method for treating wastewater from furfural production |
-
2022
- 2022-02-21 CN CN202210158011.7A patent/CN114516700A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1872726A (en) * | 2006-06-07 | 2006-12-06 | 济南圣泉集团股份有限公司 | Method for treating wastewater from furfural production |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115581933A (en) * | 2022-10-19 | 2023-01-10 | 河南禾力能源有限公司 | A furfural production system and process with ultra-low steam consumption |
| CN117482871A (en) * | 2024-01-03 | 2024-02-02 | 宁津禾洁生物科技有限公司 | Furfural extraction system for recycling low-emission furfural residues |
| CN117482871B (en) * | 2024-01-03 | 2024-04-26 | 宁津禾洁生物科技有限公司 | Furfural extraction system for recycling low-emission furfural residues |
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