CN218774304U - Concentrated system of molasses separation raffinate - Google Patents
Concentrated system of molasses separation raffinate Download PDFInfo
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- CN218774304U CN218774304U CN202221617528.XU CN202221617528U CN218774304U CN 218774304 U CN218774304 U CN 218774304U CN 202221617528 U CN202221617528 U CN 202221617528U CN 218774304 U CN218774304 U CN 218774304U
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Abstract
The utility model relates to the technical field of molasses treatment, and discloses a molasses separation residual liquid concentration system, which comprises a concentrated liquid storage tank, a raw material storage tank, a preheating unit, an evaporation unit, a forced circulation unit and a compression unit which are sequentially communicated; the forced circulation unit comprises a forced circulation heat exchanger, a gas-liquid separator and a secondary separator; the input end of the forced circulation heat exchanger is communicated with the evaporation unit, and the output end of the forced circulation heat exchanger is communicated to the gas-liquid separator; a liquid outlet of the gas-liquid separator is communicated with the forced circulation heat exchanger and the concentrated solution storage tank, and a gas outlet of the gas-liquid separator is communicated with the secondary separator; the compression unit comprises a primary compressor and a secondary compressor, wherein the input end of the primary compressor is communicated with the gas outlet of the secondary separator, the output end of the primary compressor is communicated to the secondary compressor, and the output end of the secondary compressor is communicated to the forced circulation heat exchanger. The utility model discloses can carry out cyclic reuse to distilled water, noncondensable gas, flash steam etc. avoids thermal waste, not only environmental protection but also can improve whole economic benefits.
Description
Technical Field
The utility model relates to a molasses handles technical field, especially relates to a molasses separation raffinate's concentrated system.
Background
Molasses is a byproduct of sugar industry, has different compositions due to different sugar-making raw materials and processing conditions, mainly contains a large amount of fermentable sugars such as sucrose, is a good fermentation raw material, can be used as a substrate or a base material of fermentation products such as yeast, monosodium glutamate, organic acid and the like, and can be used as a raw material of certain foods and animal feed. The molasses has high yield, namely beet molasses, cane molasses, grape molasses and corn molasses, and the molasses has low yield, namely conversion molasses and refined molasses, contains more impurities besides sugar, wherein some impurities are useful, but most of the impurities have adverse effects on fermentation and need to be treated. The molasses treating procedure generally comprises the processes of dilution heating, chemical calcium removal, filtration, chromatography, concentration and the like.
The existing concentration process of molasses separated raffinate generally adopts a single-effect or multi-effect evaporation method, a large amount of steam is consumed, secondary steam generated in evaporation directly enters a condenser for condensation, so that a large amount of waste heat is lost, in addition, the secondary steam also needs cooling water for cooling, so that more condensed water is consumed, the problems of high energy consumption, high operation cost and the like exist, and the problem of incomplete gas-liquid separation also exists, so that the waste of partial molasses or steam is caused, and the overall economic benefit is reduced.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a concentrated system of molasses separation raffinate to solve the problem that the economic benefits that molasses separation raffinate concentration in-process gas-liquid separation is not thorough, and a large amount of steam waste caused reduces
In order to solve the technical problem, the utility model discloses a following technical scheme:
a concentration system of molasses separation residual liquid comprises a raw material storage tank, a concentrated liquid storage tank, a preheating unit, an evaporation unit, a forced circulation unit and a compression unit, wherein the preheating unit, the evaporation unit, the forced circulation unit and the compression unit are sequentially communicated with the raw material storage tank;
the forced circulation unit comprises a forced circulation heat exchanger, a gas-liquid separator and a secondary separator; the input end of the forced circulation heat exchanger is communicated with the evaporation unit, and the output end of the forced circulation heat exchanger is communicated to the gas-liquid separator; the gas-liquid separator is provided with a liquid outlet and a gas outlet, the liquid outlet is respectively communicated to the forced circulation heat exchanger and the concentrated solution storage tank, and the gas outlet is communicated with the secondary separator;
the compression unit comprises a primary compressor and a secondary compressor, wherein the input end of the primary compressor is communicated with the gas outlet of the secondary separator, the output end of the primary compressor is communicated to the secondary compressor, and the output end of the secondary compressor is communicated to the forced circulation heat exchanger.
Preferably, in the concentration system of the molasses separated residual liquid, the evaporation unit comprises a one-effect evaporation unit and a two-effect evaporation unit;
the primary effect evaporation unit comprises a primary effect falling film heat exchanger and a primary effect falling film separator, wherein the input end of the primary effect falling film heat exchanger is communicated with the preheating unit, and the output end of the primary effect falling film heat exchanger is communicated with the primary effect falling film separator;
the double-effect evaporation unit comprises a double-effect falling film heat exchanger and a double-effect falling film separator, the input end of the double-effect falling film heat exchanger is communicated with the concentrated solution outlet of the first-effect falling film heat exchanger, the output end of the double-effect falling film heat exchanger is communicated to the double-effect falling film separator, and the concentrated solution outlet of the double-effect falling film heat exchanger is communicated with the forced circulation heat exchanger.
Preferably, in the concentration system for the molasses separated residual liquid, a liquid outlet and a gas outlet of the first-effect falling film separator are both communicated with the second-effect falling film heat exchanger, and a gas outlet of the second-effect falling film separator is communicated with the secondary separator.
Preferably, in the concentration system for the molasses separated residual liquid, the first-effect falling film heat exchanger and the second-effect falling film heat exchanger are both provided with self-circulation pipelines, and the self-circulation pipelines are provided with self-circulation pumps; and a concentrated solution outlet pipeline of the double-effect falling film heat exchanger is communicated with the self-circulation pipeline.
Preferably, in the concentration system of the molasses separated residual liquid, the preheating unit comprises a first preheater and a second preheater which are communicated in sequence;
the first preheater is respectively communicated with distilled water outlets of the primary effect falling film heat exchanger, the secondary effect falling film heat exchanger and the forced circulation heat exchanger, and the second preheater is respectively communicated with non-condensable gas outlets of the primary effect falling film heat exchanger, the secondary effect falling film heat exchanger and the forced circulation heat exchanger.
Preferably, in the concentration system for the molasses separated residual liquid, the preheating unit further comprises a third preheater, the third preheater is arranged between the second preheater and the single-effect falling film heat exchanger, and an input end of the third preheater is communicated with a fresh steam source.
Preferably, the molasses separation residual liquid concentration system further comprises a distilled water storage tank, an input end of the distilled water storage tank is communicated with condensate outlets of the third preheater, the first-effect falling film heat exchanger, the second-effect falling film heat exchanger and the forced circulation heat exchanger, and an output end of the distilled water storage tank is communicated to the first preheater.
Preferably, in the concentration system for the molasses separated residual liquid, a concentrated liquid outlet of the forced circulation heat exchanger is further communicated with a detergent tank, and a water outlet of the detergent tank is communicated with the first preheater.
Preferably, in the concentration system of the molasses separated residual liquid, the gas outlets of the two-effect falling film separator and the gas-liquid separator are communicated with the secondary separator.
Preferably, the system for concentrating the molasses separated residual liquid further comprises a vacuum pump heat exchanger, and the vacuum pump heat exchanger is communicated with the water outlet of the second preheater.
Preferably, in the concentration system for the molasses separated residual liquid, the gas-liquid separator, the secondary separator, the first-effect falling film separator and the second-effect falling film separator are all provided with foam removing devices, so that foams generated by the separators can be effectively removed.
The utility model provides a concentrated system of molasses separation raffinate, compared with prior art, its beneficial effect lies in:
molasses separation raffinate is through preheating the unit, evaporation unit and forced circulation unit after can dry concentration to 70-80% concentration, concentration effect is excellent, and the utility model discloses a concentration system can be to by evaporation unit, forced circulation unit exhaust distilled water, noncondensable gas, secondary steam etc. carry out circulation reuse, and carry out abundant compression to the combustion gas behind the gas-liquid separation, the high temperature steam that will obtain sends back to forced circulation unit and carries out cyclic utilization, avoids thermal waste, and no waste water produces, and not only environmental protection can improve whole economic benefits again.
Drawings
FIG. 1 is a schematic diagram I of a part of the process flow of the molasses separation residual liquid concentration system of the utility model;
FIG. 2 is a schematic view of a part of the process flow of the molasses separation residual liquid concentration system of the present invention.
In the context of the figures, it is,
1 is a raw material storage tank, 2 is a concentrated solution storage tank, 31 is a forced circulation heat exchanger, 32 is a gas-liquid separator, 33 is a secondary separator, 41 is a primary compressor, 42 is a secondary compressor, 51 is a primary effect falling film heat exchanger, 52 is a primary effect falling film separator, 61 is a secondary effect falling film heat exchanger, 62 is a secondary effect falling film separator, 71 is a self-circulation pipeline, 72 is a self-circulation pump, 81 is a first preheater, 82 is a second preheater, 83 is a third preheater, 84 is a vacuum pump heat exchanger, 9 is a distilled water storage tank, and 10 is a detergent tank.
Detailed Description
The technical solutions in the embodiments of the present invention will be described below clearly and completely, and it should be apparent that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
The embodiment of the utility model provides a concentrated system of molasses separation raffinate, including raw materials storage tank 1, concentrate storage tank 2 to and preheat unit, evaporation unit, forced circulation unit and the compression unit that communicates in proper order with raw materials storage tank 1.
In some embodiments of the present invention, the forced circulation unit comprises a forced circulation heat exchanger 31, a gas-liquid separator 32, and a secondary separator 33; the input end of the forced circulation heat exchanger 31 is communicated with the evaporation unit, the concentrated solution discharged by the evaporation unit is continuously concentrated, and the output end of the forced circulation heat exchanger 31 is communicated to the gas-liquid separator 32 for gas-liquid separation of the concentrated solution.
In some embodiments of the present invention, the gas-liquid separator 32 is provided with a liquid outlet and a gas outlet, the liquid outlet is communicated to the concentrated solution storage tank 2 to collect the molasses separation residual concentrated solution with qualified concentration, and the liquid outlet is also communicated to the forced circulation heat exchanger 31 to make the unqualified concentrated solution flow back to the forced circulation heat exchanger 31 to continue the evaporation concentration; the gas outlet communicates with the secondary separator 33 to allow more thorough gas-liquid separation.
In some embodiments of the present invention, the compression unit includes a first-stage compressor 41 and a second-stage compressor 42, the input end of the first-stage compressor 41 is communicated with the gas outlet of the secondary separator 33, the output end is communicated to the second-stage compressor 42, and the output end of the second-stage compressor 42 is communicated to the forced circulation heat exchanger 31, so as to perform sufficient second-stage high-temperature heating on the gas and then return to the forced circulation heat exchanger 31 for recycling; wherein each stage of compressor can raise the temperature of steam by 5-10 ℃.
In some embodiments of the present invention, the evaporation unit comprises a first-effect evaporation unit and a second-effect evaporation unit;
the first-effect evaporation unit comprises a first-effect falling film heat exchanger 51 and a first-effect falling film separator 52, wherein the input end of the first-effect falling film heat exchanger 51 is communicated with the preheating unit, and the preheated molasses separation residual liquid is primarily concentrated; the output end of the first effect falling film heat exchanger 51 is communicated to the first effect falling film separator 52 for gas-liquid separation.
The double-effect evaporation unit comprises a double-effect falling film heat exchanger 61 and a double-effect falling film separator 62, the input end of the double-effect falling film heat exchanger 61 is communicated with the concentrated solution outlet of the first-effect falling film heat exchanger 51, and the primary concentrated molasses separated residual liquid is subjected to secondary concentration treatment; the output end of the double-effect falling film heat exchanger 61 is communicated to the double-effect falling film separator 62 for gas-liquid separation, and the concentrated solution outlet of the double-effect falling film heat exchanger 61 is communicated with the forced circulation heat exchanger 31.
In some embodiments of the present invention, the liquid outlet of the first effect falling film separator 52 is communicated to the second effect falling film heat exchanger 61 to realize the transportation of the concentrated liquid; the gas outlet of the first-effect falling film separator 52 is communicated to the second-effect falling film heat exchanger 61, and the gas outlet of the second-effect falling film separator 62 is communicated with the secondary separator 33, so that the cyclic utilization of steam is realized.
In some embodiments of the present invention, the first effect falling film heat exchanger 51 and the second effect falling film heat exchanger 61 are both provided with a self-circulation pipeline 71, and a self-circulation pump 72 is provided on the self-circulation pipeline 71, and the concentrated solution outlet pipeline of the second effect falling film heat exchanger 61 is communicated with the self-circulation pipeline 71, so as to fully concentrate the syrup residue.
In some embodiments of the present invention, the preheating unit comprises a first preheater 81 and a second preheater 82 which are connected in sequence;
the first preheater 81 is respectively communicated with the distilled water outlets of the first-effect falling film heat exchanger 51, the second-effect falling film heat exchanger 61 and the forced circulation heat exchanger 31, so that the cyclic utilization of the distilled water is realized; the second preheater 82 is respectively communicated with the non-condensable gas outlets of the first-effect falling film heat exchanger 51, the second-effect falling film heat exchanger 61 and the forced circulation heat exchanger 31, so that the recycling of the non-condensable gas is realized.
In some embodiments of the present invention, the preheating unit further includes a third preheater 83, the third preheater 83 is disposed between the second preheater 82 and the first-effect falling film heat exchanger 51, and an input end of the third preheater 83 is communicated with a fresh steam source; when the molasses syrup has not yet reached the evaporation temperature after preheating by the second preheater 82, preheating is continued by means of the fresh steam in the third preheater 83.
In some embodiments of the present invention, the system further comprises a distilled water storage tank 9, wherein the input end of the distilled water storage tank 9 is respectively communicated with the condensate outlet of the third preheater 83, the first-effect falling film heat exchanger 51, the second-effect falling film heat exchanger 61 and the forced circulation heat exchanger 31, and the output end of the distilled water storage tank 9 is communicated to the first preheater 81, so as to realize the storage and recycling of the distilled water.
In some embodiments of the present invention, the concentrated solution outlet of the forced circulation heat exchanger 31 is further communicated with the detergent tank 10 to receive the washing solution discharged after washing the forced circulation heat exchanger 31; and the water outlet of the detergent tank 10 is communicated to the first preheater 81, so that the recycling of the aqueous solution is realized.
In some embodiments of the present invention, the gas outlets of the two-effect falling film separator 62 and the gas-liquid separator 32 are both communicated to the secondary separator 33, so as to realize the recycling of the steam.
The utility model discloses in some embodiments, still include vacuum pump heat exchanger 84, vacuum pump heat exchanger 84 and second preheater 82 delivery port intercommunication to obtain the condensate after carrying out the heat transfer to the discharged water from second preheater 82 and discharge.
In some embodiments of the present invention, the gas-liquid separator 32, the secondary separator 33, the first effect membrane-falling separator 52, and the second effect membrane-falling separator 62 are all provided with foam removing devices, which can effectively remove the foam generated by the separators.
In some embodiments of the present invention, the first heat exchanger, the second heat exchanger, the third heat exchanger and the vacuum pump heat exchanger 84 are plate heat exchangers.
In some embodiments of the present invention, the first-effect falling film heat exchanger 51, the second-effect falling film heat exchanger 61, and the forced circulation heat exchanger 31 are tube type heat exchangers.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the scheme disclosed in the embodiment, the method corresponds to the method disclosed in the embodiment, so the description is simple, and the relevant points can be referred to the description of the method part. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A concentration system for molasses separation residual liquid is characterized by comprising a raw material storage tank, a concentrated liquid storage tank, a preheating unit, an evaporation unit, a forced circulation unit and a compression unit, wherein the preheating unit, the evaporation unit, the forced circulation unit and the compression unit are sequentially communicated with the raw material storage tank;
the forced circulation unit comprises a forced circulation heat exchanger, a gas-liquid separator and a secondary separator; the input end of the forced circulation heat exchanger is communicated with the evaporation unit, and the output end of the forced circulation heat exchanger is communicated to the gas-liquid separator; the gas-liquid separator is provided with a liquid outlet and a gas outlet, the liquid outlet is respectively communicated to the forced circulation heat exchanger and the concentrated solution storage tank, and the gas outlet is communicated with the secondary separator;
the compression unit comprises a primary compressor and a secondary compressor, wherein the input end of the primary compressor is communicated with the gas outlet of the secondary separator, the output end of the primary compressor is communicated to the secondary compressor, and the output end of the secondary compressor is communicated to the forced circulation heat exchanger.
2. The system for concentrating molasses separation raffinate according to claim 1, wherein the evaporation unit comprises a one-effect evaporation unit and a two-effect evaporation unit;
the primary effect evaporation unit comprises a primary effect falling film heat exchanger and a primary effect falling film separator, wherein the input end of the primary effect falling film heat exchanger is communicated with the preheating unit, and the output end of the primary effect falling film heat exchanger is communicated with the primary effect falling film separator;
the double-effect evaporation unit comprises a double-effect falling film heat exchanger and a double-effect falling film separator, the input end of the double-effect falling film heat exchanger is communicated with the concentrated solution outlet of the first-effect falling film heat exchanger, the output end of the double-effect falling film heat exchanger is communicated to the double-effect falling film separator, and the concentrated solution outlet of the double-effect falling film heat exchanger is communicated with the forced circulation heat exchanger.
3. The concentration system of molasses separation residual liquid according to claim 2, characterized in that the liquid outlet and the gas outlet of the first effect falling film separator are both communicated to the double effect falling film heat exchanger, and the gas outlet of the double effect falling film separator is communicated with the secondary separator.
4. The system for concentrating molasses separation residual liquid according to claim 2, wherein the first-effect falling film heat exchanger and the second-effect falling film heat exchanger are both provided with self-circulation pipelines, and self-circulation pumps are arranged on the self-circulation pipelines; and a concentrated solution outlet pipeline of the double-effect falling film heat exchanger is communicated with the self-circulation pipeline.
5. The molasses separation raffinate concentration system according to claim 2, wherein the preheating unit comprises a first preheater and a second preheater which are communicated in sequence;
the first preheater is respectively communicated with distilled water outlets of the primary effect falling film heat exchanger, the secondary effect falling film heat exchanger and the forced circulation heat exchanger, and the second preheater is respectively communicated with non-condensable gas outlets of the primary effect falling film heat exchanger, the secondary effect falling film heat exchanger and the forced circulation heat exchanger.
6. The system for concentrating molasses separation residual liquid according to claim 5, wherein the preheating unit further comprises a third preheater, the third preheater is arranged between the second preheater and the single-effect falling film heat exchanger, and the input end of the third preheater is communicated with a fresh steam source.
7. The system for concentrating molasses separation residual liquid according to claim 6, further comprising a distilled water storage tank, wherein an input end of the distilled water storage tank is communicated with condensate outlets of the third preheater, the first-effect falling film heat exchanger, the second-effect falling film heat exchanger and the forced circulation heat exchanger, and an output end of the distilled water storage tank is communicated to the first preheater.
8. The molasses separation residual liquid concentrating system according to claim 5, wherein the concentrated liquid outlet of the forced circulation heat exchanger is further communicated with a detergent tank, and a water outlet of the detergent tank is communicated with the first preheater.
9. The system for concentrating molasses separation residual liquid according to claim 2, characterized in that the gas outlets of the two-effect falling film separator and the gas-liquid separator are communicated to the secondary separator.
10. The system for concentrating molasses separation residual liquid according to any one of claims 5-8, further comprising a vacuum pump heat exchanger, wherein the vacuum pump heat exchanger is communicated with the water outlet of the second preheater.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221617528.XU CN218774304U (en) | 2022-06-25 | 2022-06-25 | Concentrated system of molasses separation raffinate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221617528.XU CN218774304U (en) | 2022-06-25 | 2022-06-25 | Concentrated system of molasses separation raffinate |
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| CN218774304U true CN218774304U (en) | 2023-03-31 |
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| CN202221617528.XU Active CN218774304U (en) | 2022-06-25 | 2022-06-25 | Concentrated system of molasses separation raffinate |
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Address after: 841007 room 101-120, No. 35, building 11, east entrance of 29tuan highway, Kuxi Industrial Park, Tiemenguan City, Bayingolin Mongol Autonomous Prefecture, Xinjiang Uygur Autonomous Region Patentee after: Xinjiang Guannong Co.,Ltd. Patentee after: XINJIANG LYUYUAN SUGAR INDUSTRY CO.,LTD. Address before: 841007 room 101-120, No. 35, building 11, east entrance of 29tuan highway, Kuxi Industrial Park, Tiemenguan City, Bayingolin Mongol Autonomous Prefecture, Xinjiang Uygur Autonomous Region Patentee before: Xinjiang guannong fruit antler Co.,Ltd. Patentee before: XINJIANG LYUYUAN SUGAR INDUSTRY CO.,LTD. |
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