CN217708963U - Furfuryl alcohol coproduction 2-methyl furan technology waste water treatment recycling system - Google Patents
Furfuryl alcohol coproduction 2-methyl furan technology waste water treatment recycling system Download PDFInfo
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- CN217708963U CN217708963U CN202121991685.2U CN202121991685U CN217708963U CN 217708963 U CN217708963 U CN 217708963U CN 202121991685 U CN202121991685 U CN 202121991685U CN 217708963 U CN217708963 U CN 217708963U
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Abstract
The utility model belongs to the technical field of waste water treatment retrieval and utilization, a furfuryl alcohol coproduction 2-methyl furan technology waste water treatment retrieval and utilization system is related to. The system comprises a waste water collecting tank, a membrane separation system, a concentrated solution collecting tank, a pure water collecting tank, a tubular reactor and a condenser, and is characterized in that the waste water collecting tank is connected with the membrane separation system through a delivery pump; the connecting membrane separation system is connected with the concentrated solution collecting tank and the pure water collecting tank in parallel through pipelines; the concentrated solution collecting tank is connected with a delivery pump through a pipeline and a valve and is pumped into a connecting membrane separation system; the pure water collecting tank is connected with a shell side water supply pipeline of the tubular reactor, and a shell side water drain pipeline of the tubular reactor is connected with the condenser; the condenser is connected with a circulating water conveying pipeline, and the circulating water conveying pipeline is introduced into the waste water collecting tank to complete circulation. The system can efficiently recover 2-methylfuran in the furfuryl alcohol co-production 2-methylfuran process wastewater, realizes wastewater recycling, saves water, reduces wastewater discharge, and is beneficial to environmental protection.
Description
Technical Field
The utility model relates to a waste water treatment recycling technology, in particular to a furfuryl alcohol coproduction 2-methyl furan technology waste water treatment recycling system.
Background
Furfuryl alcohol and 2-methylfuran are two biomass-based platform compounds, and belong to high-added-value fine chemical products supporting the development of the country. Furfuryl alcohol and 2-methylfuran can be produced by a furfural hydrogenation process, and the raw materials and the process flow of the two products are similar, so that a co-production process method is commonly adopted in the industry to simultaneously produce the two products, thereby achieving the purposes of sharing engineering and resources, reducing energy consumption and compression cost, avoiding waste and improving efficiency.
In the process for preparing furfuryl alcohol by furfural through medium-high pressure liquid phase hydrogenation, a crude furfuryl alcohol product is rectified and purified by adopting a negative pressure distillation process, a large amount of waste water is generated, and the waste water contains a small amount of furfuryl alcohol and a byproduct 2-methylfuran through assay and analysis. In the process of preparing 2-methylfuran by normal-pressure gas-phase hydrogenation of furfural, furfural and hydrogen generate 2-methylfuran and water in a fixed bed reactor, and about 18 percent of wastewater can be generated after primary separation, and the wastewater still contains about 3 percent of 2-methylfuran. Because 2-methylfuran is expensive, has higher added value and extremely high recovery value, the process for co-producing 2-methylfuran by furfuryl alcohol focuses on the recovery of 2-methylfuran and the recycling of wastewater.
Aiming at the wastewater treatment of the furfuryl alcohol co-production 2-methylfuran process, the traditional sewage treatment method is still adopted in the industry at present, the 2-methylfuran in the wastewater cannot be recovered to the maximum degree and efficiently, the wastewater cannot be recycled, and the waste of products and water resources is caused. Therefore, it is necessary to develop a 2-methylfuran separation system in the recovered wastewater and recycle the treated wastewater according to the material characteristics of furfuryl alcohol and 2-methylfuran.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a furfuryl alcohol coproduction 2-methyl furan technology effluent disposal recycling system solves among the furfuryl alcohol coproduction 2-methyl furan trade that the waste water treatment degree of difficulty is big, equipment drops into much, investment cost is high, the product rate of recovery is low, the unable retrieval and utilization of waste water after handling causes the defect of wasting of resources.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
the furfuryl alcohol coproduction 2-methyl furan technology effluent disposal recycling system includes: the system comprises a wastewater collection tank, a membrane separation system, a concentrated solution collection tank, a pure water collection tank, a tubular reactor and a condenser, and is characterized in that the wastewater collection tank is connected with the membrane separation system through a delivery pump; the connecting membrane separation system is connected with the concentrated solution collecting tank and the pure water collecting tank in parallel through pipelines; the concentrated solution collecting tank is connected with a delivery pump through a pipeline and a valve and is pumped into a connecting membrane separation system; the pure water collecting tank is connected with a shell side water supply pipeline of the tubular reactor, and a shell side water drain pipeline of the connecting tubular reactor is connected with the condenser; the condenser is connected with a circulating water conveying pipeline, and the circulating water conveying pipeline is introduced into the waste water collecting tank to complete circulation.
Depending on the scale of the process, a plurality of processing units may be provided, and connected as described above.
The membrane separation system adopts an organic tubular membrane separation system to separate and treat the wastewater.
The tubular reactor is used for furfuryl alcohol synthesis.
Preferably, the organic tubular membrane separation system comprises a membrane shell, a membrane element and a connecting pipeline; the membrane shell contains a plurality of organic tubular membrane elements which are equal in length and connected in parallel; the two ends of the organic tubular membrane element are fixed on the inner wall of the membrane shell through specific resin adhesives.
Preferably, the wastewater is connected with a liquid inlet of the organic tubular membrane separation system through a wastewater collection tank and a wastewater delivery pump.
Preferably, the liquid outlet of the organic tubular membrane separation system is connected with the inlet of the concentrated solution collecting tank through a pipeline.
Preferably, a lateral liquid outlet of the organic tubular membrane separation system is connected with an inlet of the pure water collecting tank through a pipeline.
Preferably, a liquid outlet at the bottom of the concentrated solution collecting tank is connected with an inlet of a waste water conveying pump through a pipeline, and concentrated solution is pumped into the connecting membrane separation system.
Preferably, the condenser comprises a condenser waste water inlet arranged at the upper part and a condenser waste water outlet arranged at the lower part.
Preferably, an outlet at the bottom of the pure water collecting tank is connected with an inlet on the shell side of the tubular reactor through a pipeline.
The utility model discloses the advantage: the furfuryl alcohol coproduction 2-methyl furan process wastewater treatment recycling system is provided with the organic tubular membrane separation system, so that 2-methyl furan in wastewater can be efficiently separated, and the separated wastewater can be stored in a pure water collecting tank as desalted water for use in subsequent working sections; further, pure water is sent into the shell side of the tubular reactor from the pure water collecting tank to exchange heat with the furfuryl alcohol hydrogenation reaction, and the temperature of a reactor bed layer is kept stable; 2-methylfuran concentrated solution separated by the organic tubular membrane separation system enters a concentrated solution collection tank, and the bottom of the concentrated solution collection tank is connected with a wastewater delivery pump through a valve, so that the concentrated solution can be separated and concentrated again; the continuous recovery device has the advantages of continuous operation, simple structure, reasonable design, low investment cost, capability of efficiently recovering the 2-methylfuran in the chemical water, realization of wastewater recovery and reuse, water conservation, reduction of wastewater discharge and contribution to environmental protection.
Drawings
Fig. 1 is a schematic structural diagram of the present invention. In the figure: 1. a furfuryl alcohol process wastewater line; 2. 2-methylfuran process wastewater pipeline; 3. a wastewater collection tank; 4. a wastewater delivery pump; 5. an organic tubular membrane separation system; 6. a concentrated solution collection tank; 7. a pure water collection tank; 8. a shell side water feeding pipeline of the tubular reactor; 9. a tubular reactor; 10. a shell pass water return pipeline of the tubular reactor; 11. a condenser; 12. a circulating water conveying pipeline and a concentrated solution conveying pipeline 13.
FIG. 2 is a schematic diagram of the structure of an organic tubular membrane of the present invention, in which 14-membrane element, 15-membrane shell, and 16-connecting pipe.
Detailed Description
In order to make the purpose, technical solution and advantages of the present invention clearer, the attached drawings of the present invention will be combined below, which is clear and completely describe the technical solution of the present invention.
Referring to FIGS. 1-2: the utility model discloses to furfuryl alcohol coproduction 2-methyl furan technology waste water treatment retrieval and utilization, designed effluent disposal system, this system includes:
the system comprises a waste water collecting tank (3), a membrane separation system (5), a concentrated solution collecting tank (6), a pure water collecting tank (7), a tubular reactor (9) and a condenser (11), and is characterized in that an outlet at the bottom of the waste water collecting tank (3) is connected with a liquid inlet of the membrane separation system (5) through a delivery pump (4); a liquid outlet connected with the membrane separation system (5) is connected with a liquid inlet of the concentrated liquid collecting tank (6) and a liquid inlet of the pure water collecting tank (7) in parallel through pipelines; a liquid outlet of the concentrated liquid collecting tank (6) is connected with a delivery pump (4) through a pipeline (13) and a valve and is pumped into a liquid inlet connected with the membrane separation system (5); a liquid outlet of the pure water collecting tank (7) is connected with a shell side water feeding pipeline (8) of the tubular reactor (9), and a shell side water discharging pipeline (10) of the tubular reactor (9) is connected with a liquid inlet of the condenser (11); the liquid outlet of the condenser (11) is connected with a circulating water conveying pipeline (12), and the circulating water conveying pipeline (12) is introduced into the waste water collecting tank (3) to complete circulation.
Depending on the scale of the process, a plurality of processing units may be provided, and connected as described above. The units are connected in parallel.
The connecting membrane separation system (5) adopts an organic tubular membrane separation system to separate the wastewater, and comprises a membrane shell (15), a membrane element (14) and a connecting pipeline (16); the membrane shell (15) contains a plurality of organic tubular membrane elements (14) which are equal in length and are connected in parallel, and both ends of each organic tubular membrane element (14) are fixed on the inner wall of the membrane shell (15) through specific resin adhesives.
Preferably selecting a PEEK material tubular membrane element and a stainless steel membrane shell; the organic tubular membrane separation system adopts a cross-flow filtration mode.
The tubular reactor (9) is used for furfuryl alcohol synthesis.
The utility model realizes the collection and cooling of the waste water in the co-production by arranging the condenser 11, the service life of the organic tubular membrane can be protected by cooling, the 2-methylfuran in the waste water is separated and recovered by the organic tubular membrane separation system (5), the main component of the concentrated solution is the 2-methylfuran which is collected in the concentrated solution collection tank (6), and the separated clear solution reaches the basis of being used as desalted water or recycled water and is collected in the pure water collection tank (7); and further, the pure water after the 2-methylfuran separation enters a pure water collecting tank (7) and then enters a jacket layer of a connecting pipe type reactor (9) through a pipeline to exchange heat with a reaction bed layer in the connecting pipe type reactor, and steam after heat exchange can enter a condenser (11).
The working principle of the utility model comprises the following steps: 1. wastewater generated by a furfuryl alcohol refining process enters a wastewater collecting tank (3) through a pipeline (1), wastewater generated by a 2-methylfuran production process also enters the wastewater collecting tank (3) through a pipeline (2), and the wastewater of a co-production process is collected in a centralized manner through the wastewater collecting tank (3); 2. the wastewater in the wastewater collection tank (3) is pumped into an organic tubular membrane separation system (5) through a wastewater delivery pump (4), concentrated solution separated by the organic tubular membrane separation system (5) is mainly 2-methylfuran and is collected in a concentrated solution collection tank (6), clear solution is mainly pure water and is collected in a pure water collection tank (7), the concentrated solution collection tank (6) is connected with the wastewater delivery pump (4) through a bottom pipeline (13), and the concentrated solution is pumped into the organic tubular membrane separation system (5), so that high-multiple concentration of the 2-methylfuran can be realized; 3. pure water in the pure water collecting tank (7) enters a jacket of the connecting pipe type reactor (9) through a pipeline (8) to exchange heat with a reaction bed layer in the connecting pipe type reactor, and reaction heat generated in the furfuryl alcohol hydrogenation reaction is absorbed. Compared with the traditional wastewater treatment process, the utility model discloses use equipment is few, and the equipment in the current production technology of make full use of not only can effectively retrieve the 2-methyl furan in the waste water, has still realized the waste water recovery reuse, has improved the environmental protection and has administered and the energy-conserving row that falls, has stopped the waste of resource.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. The utility model provides a furfuryl alcohol coproduction 2-methyl furan technology effluent disposal recycling system, this system includes waste water collection tank, membrane separation system, dense liquid collection tank, pure water collection tank, tubular reactor, condenser, its characterized in that: the wastewater collection tank is connected with the membrane separation system through a delivery pump; the connecting membrane separation system is connected with the concentrated solution collecting tank and the pure water collecting tank in parallel through pipelines; the concentrated solution collecting tank is connected with a delivery pump through a pipeline and a valve and is pumped into a connecting membrane separation system; the pure water collecting tank is connected with a shell side water supply pipeline of the tubular reactor, and a shell side water drain pipeline of the connecting tubular reactor is connected with the condenser; the condenser is connected with a circulating water conveying pipeline, and the circulating water conveying pipeline is introduced into the waste water collecting tank to complete circulation.
2. The system for treating and recycling furfuryl alcohol co-produced 2-methyl furan process wastewater as claimed in claim 1, wherein: a plurality of processing units are arranged according to the processing scale and are connected in the manner described above.
3. The system for treating and recycling the furfuryl alcohol co-production 2-methylfuran process wastewater according to claim 1 or 2, characterized in that: the membrane separation system adopts an organic tubular membrane separation system to separate and treat the wastewater.
4. The system for treating and recycling furfuryl alcohol co-produced 2-methyl furan process wastewater as claimed in claim 3, wherein: the organic tubular membrane separation system comprises a membrane shell, membrane elements and a connecting pipeline, wherein the membrane shell contains a plurality of organic tubular membrane elements which are equal in length and connected in parallel, and the organic tubular membrane elements are fixed on the inner wall of the membrane shell.
5. The furfuryl alcohol coproduction 2-methyl furan process wastewater treatment recycling system of claim 1 or 2, wherein: two wastewater inlet flanges are arranged at the top of the wastewater collection tank;
the wastewater inlet flange is respectively connected with a furfuryl alcohol production process wastewater conveying pipeline and a 2-methyl furan production process wastewater conveying pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121991685.2U CN217708963U (en) | 2021-08-24 | 2021-08-24 | Furfuryl alcohol coproduction 2-methyl furan technology waste water treatment recycling system |
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| CN202121991685.2U CN217708963U (en) | 2021-08-24 | 2021-08-24 | Furfuryl alcohol coproduction 2-methyl furan technology waste water treatment recycling system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118084273A (en) * | 2024-04-23 | 2024-05-28 | 河南氢力能源有限公司 | Integrated sewage treatment equipment and method for 2-methyl furan production |
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2021
- 2021-08-24 CN CN202121991685.2U patent/CN217708963U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118084273A (en) * | 2024-04-23 | 2024-05-28 | 河南氢力能源有限公司 | Integrated sewage treatment equipment and method for 2-methyl furan production |
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