CN217025828U - Comprehensive utilization device for recycling fusel in methanol rectification process - Google Patents
Comprehensive utilization device for recycling fusel in methanol rectification process Download PDFInfo
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- CN217025828U CN217025828U CN202220410611.3U CN202220410611U CN217025828U CN 217025828 U CN217025828 U CN 217025828U CN 202220410611 U CN202220410611 U CN 202220410611U CN 217025828 U CN217025828 U CN 217025828U
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Abstract
The utility model discloses a fusel resource comprehensive utilization device in a methanol rectification process, which comprises the following steps: mainly comprises a tank wagon, a unloading pump, a fusel tank, a fusel pump, an extraction tank, an extraction taking-out pump, a multi-point layered sampling device, a light component tank, a mixed alcohol tank, a methanol recovery tower feeding pump, a methanol recovery preheater, a methanol recovery tower, a first circulating water cooler, a methanol collecting tank, a methanol reflux pump, a methanol recovery tower reboiler, an ethanol recovery tower feeding pump, an ethanol recovery tower, a second circulating water cooler, an ethanol collecting tank, an ethanol reflux pump, an ethanol recovery tower reboiler, a methanol product tank, an ethanol product tank and a waste water pump. The device can effectively reduce the hazardous waste amount of methanol rectification in the methanol industry in the methanol rectification process originally used as hazardous waste disposal, not only reduces the disposal cost of the hazardous waste, but also takes the methanol and the ethanol recovered from the fusel as products for sale, generates greater economic benefit, comprehensively utilizes the fusel as resources, reduces the treatment difficulty and the disposal cost, changes the fusel hazardous waste into valuable substances, and realizes comprehensive utilization of the resources.
Description
Technical Field
The utility model belongs to the technical field of comprehensive utilization of hazardous waste resources, and particularly relates to a comprehensive utilization device of fusel resources in a methanol rectification process.
Background
In the methanol production, due to the selectivity of the methanol synthesis catalyst and other reasons, substances such as ethanol and the like are inevitably generated in the methanol synthesis process, particularly, in the later period and the final period of the use of the methanol synthesis catalyst, alcohol substances such as ethanol and the like are obviously increased, a refined methanol product which meets the quality of the methanol product is not obtained, the synthesized crude methanol needs to be refined, the domestic typical methanol rectification process is the methanol rectification process of Tianjin university, namely a 5-tower rectification process, wherein a 01 tower is a pre-rectifying tower, a 02 tower is a pressurized rectifying tower, a 03 tower is a normal-pressure rectifying tower, a 04 tower is a fusel recovery tower, a 05 tower is a non-condensing gas washing tower at the top of the pre-rectifying tower, indiscriminately recovering substances such as ethanol and the like through a fusel recovery tower, feeding the recovered fusel (mainly containing water, methanol and ethanol) into a fusel tank, then the treatment is carried out, and the fusel belongs to hazardous waste, so that the treatment difficulty and the treatment cost are increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a fusel recycling comprehensive utilization device in a methanol rectification process aiming at the defects in the existing methanol rectification fusel recycling comprehensive utilization, which can recycle the fusel which is originally dangerous waste, recover methanol and ethanol in the fusel and sell the fusel as a product, effectively reduce the treatment difficulty and the disposal cost of the fusel in the methanol rectification process, change the fusel into dangerous waste into valuable, realize the fusel recycling comprehensive utilization in the methanol rectification process, reduce the overall economic cost of production and improve the overall economic benefit.
The purpose of the utility model is realized by the following technical scheme.
The utility model relates to a fusel resource comprehensive utilization device in a methanol rectification process, which comprises a fusel tank, an extraction tank, a mixed alcohol tank, a methanol recovery tower, an ethanol recovery tower, a methanol product tank and an ethanol product tank;
the top feed port of the fusel tank is connected to a tank car through a pipeline and a unloading pump, the lower discharge port of the fusel tank is connected to the top feed port of an extraction tank through a pipeline and a fusel pump, the extraction tank is provided with a multi-point layered sampling device, the upper discharge port of the extraction tank is connected to a light component tank through a pipeline, the lower discharge port of the extraction tank is connected to the top feed port of a mixed alcohol tank through a pipeline and an extraction pump, and the lower discharge port of the mixed alcohol tank is connected to the tube pass inlet of a methanol recovery preheater through a pipeline and a methanol recovery tower feed pump;
the upper part feed inlet of the methanol recovery tower is connected to a tube pass outlet of a methanol recovery preheater through a pipeline, a top discharge outlet of the methanol recovery tower is sequentially connected with a first circulating water cooler, a methanol collecting tank and a methanol reflux pump through pipelines, and a discharge outlet of the methanol reflux pump is respectively connected to an upper part circulating inlet of the methanol recovery tower and a methanol product tank through pipelines; a reboiler of the methanol recovery tower is connected between the circulating outlet and the circulating inlet at the lower part of the methanol recovery tower through a pipeline, and a discharge port at the lower part of the methanol recovery tower is connected to an inlet of a feed pump of the ethanol recovery tower through a pipeline;
the upper part feed inlet of the ethanol recovery tower is connected to an outlet of a feed pump of the ethanol recovery tower through a pipeline, a top discharge outlet of the ethanol recovery tower is sequentially connected with a second circulating water cooler, an ethanol collecting tank and an ethanol reflux pump through pipelines, and a discharge outlet of the ethanol reflux pump is respectively connected to an upper part circulating inlet of the ethanol recovery tower and an ethanol product tank through pipelines; an ethanol recovery tower reboiler is connected between the circulation outlet and the circulation inlet at the lower part of the ethanol recovery tower through a pipeline, and a discharge port at the lower part of the ethanol recovery tower is connected to a shell pass inlet of the methanol recovery preheater through a waste water pump through a pipeline.
When the methanol rectification device is combined with the methanol rectification device, the fusel tank adopts a methanol rectification device fusel tank, the fusel pump adopts a methanol rectification device fusel pump, the light component tank adopts a methanol rectification device light component tank, and the methanol product tank adopts a methanol rectification device methanol product tank.
When the device is combined with a methanol rectification device, the lower discharge ports of the fusel tank and the extraction tank are connected to the underground tank of the methanol rectification device tank area through pipelines.
Compared with the prior art, the technical scheme of the utility model has the following beneficial effects:
(1) the device is successfully applied to the treatment of fusel of the methanol rectifying device, solves the problem of dangerous waste treatment of the fusel of the methanol rectifying device, recycles methanol and ethanol in the fusel as products, and realizes the recycling comprehensive utilization of the dangerous waste fusel.
(2) The device can effectively reduce the hazardous waste amount of methanol rectification in the methanol industry, not only reduces the disposal cost of the hazardous waste, but also takes the methanol and the ethanol recovered from the fusel as products for sale, thereby generating greater economic benefit.
(3) The device can be independently constructed and operated, and can also be jointly constructed and operated with a methanol rectifying device; low investment cost, flexible site selection, short construction period, simple operation and easy popularization.
(4) The device provided by the utility model is combined with a methanol rectifying device for operation, and can be used for treating fusel of the methanol rectifying device and fusel of other methanol rectifying devices, so that the fusel of each methanol rectifying device is recycled comprehensively.
Drawings
FIG. 1 is a schematic diagram of the process of the present invention;
FIG. 2 is a schematic view of the process of the present invention in combination with a methanol distillation apparatus.
Reference numerals: 1-tank wagon, 2-unloading pump, 3-fusel tank, 4-fusel pump, 5-extraction tank, 6-extraction take-out pump, 7-multipoint layered sampling device, 8-light component tank, 9-mixed alcohol tank, 10-methanol recovery tower feed pump, 11-methanol recovery preheater, 12-methanol recovery tower, 13-first circulating water cooler, 14-methanol collecting tank, 15-methanol reflux pump, 16-methanol recovery tower reboiler, 17-ethanol recovery tower feed pump, 18-ethanol recovery tower, 19-second circulating water cooler, 20-ethanol, 21-ethanol reflux pump, 22-ethanol recovery tower reboiler, 23-methanol product tank, 24-ethanol product tank, 25-waste water pump, 26-methanol rectification unit tank field underground tank.
Detailed Description
The utility model will be further described with reference to the drawings and illustrative embodiments, which are provided herein for the purpose of illustrating the utility model and are not to be construed as limiting the utility model.
As shown in fig. 1, the comprehensive fusel resource utilization device in the methanol rectification process mainly comprises a fusel tank 3, an extraction tank 5, a mixed alcohol tank 9, a methanol recovery tower 12, an ethanol recovery tower 18, a methanol product tank 23 and an ethanol product tank 24.
The top feed inlet of fusel jar 3 is connected to tank wagon 1 through pipeline through unloading pump 2, the lower part discharge gate of fusel jar 3 is connected to the top feed inlet of extraction jar 5 through fusel pump 4 through the pipeline, extraction jar 5 is provided with multiple spot layering sampling device 7, 5 overhead discharge gates of extraction jar pass through pipe connection to light component jar 8, 5 overhead discharge gates of extraction jar are connected to the top feed inlet of mixed mellow wine jar 9 through extraction take-out pump 6 through the pipeline, the lower part discharge gate of mixed mellow wine jar 9 is connected to the tube side import of methanol recovery preheater 11 through methanol recovery tower feed pump 10 through the pipeline.
The upper part feed inlet of the methanol recovery tower 12 is connected to the tube pass outlet of the methanol recovery preheater 11 through a pipeline, the top discharge outlet of the methanol recovery tower 12 is sequentially connected with a first circulating water cooler 13, a methanol collecting tank 14 and a methanol reflux pump 15 through pipelines, and the discharge outlet of the methanol reflux pump 15 is respectively connected to the upper part circulating inlet of the methanol recovery tower 12 and a methanol product tank 23 through pipelines; a methanol recovery tower reboiler 16 is connected between the circulation outlet and the circulation inlet at the lower part of the methanol recovery tower 18 through a pipeline, and a discharge port at the lower part of the methanol recovery tower 12 is connected to an inlet of an ethanol recovery tower feed pump 17 through a pipeline.
The upper part feed inlet of the ethanol recovery tower 18 is connected to the outlet of a feed pump 17 of the ethanol recovery tower through a pipeline, the top discharge outlet of the ethanol recovery tower 18 is sequentially connected with a second circulating water cooler 19, an ethanol collecting tank 20 and an ethanol reflux pump 21 through pipelines, and the discharge outlet of the ethanol reflux pump 21 is respectively connected to the upper part circulating inlet of the ethanol recovery tower 18 and an ethanol product tank 24 through pipelines; an ethanol recovery tower reboiler 22 is connected between the circulating outlet and the circulating inlet at the lower part of the ethanol recovery tower 18 through a pipeline, and a discharge port at the lower part of the ethanol recovery tower 18 is connected to a shell side inlet of the methanol recovery preheater 11 through a waste water pump 25 through a pipeline.
In the utility model, two unloading pumps 2, a fusel pump 4, an extraction and extraction pump 6, a methanol recovery tower feeding pump 10, a methanol reflux pump 15, an ethanol recovery tower feeding pump 17, an ethanol reflux pump 21 and a waste water pump 25 can be arranged in parallel, and each pump can be provided with a filter.
The fusel resource comprehensive utilization device in the methanol rectification process can be built together with a methanol rectification device, the fusel tank 3 can adopt a fusel tank of the methanol rectification device, the fusel pump 4 can adopt a fusel pump of the methanol rectification device, the light component tank 8 can adopt a light component tank of the methanol rectification device, and the methanol product tank 23 can adopt a methanol product tank of the methanol rectification device, so that the investment is reduced. When the device is combined with a methanol rectification device, as shown in fig. 2, the lower discharge ports of the fusel tank 3 and the extraction tank 5 are connected to an underground tank 26 of a methanol rectification device tank field through pipelines. The fusel tank of the methanol rectification device can be used for pre-extraction instead of the fusel tank 3, and the mixed liquid with more water at the bottoms of the fusel tank 3 and the extraction tank 5 can enter an underground tank 26 of the tank field of the methanol rectification device and return to a methanol rectification system for product utilization.
The working process of the fusel resource comprehensive utilization device in the methanol rectification process comprises the following steps:
the first step is as follows: fusel is transported by tanker 1 to a fusel unloading point and delivered by unloading pump 2 to fusel tank 3.
The second step: the fusel in the fusel tank 3 is sent to an extraction tank 5 through a fusel pump 4, a special system with main components of the fusel being water, methanol, ethanol and the like is utilized, namely the fusel has the characteristics of self-extraction, commonly called layering and the like, the fusel is extracted by utilizing the self-extraction of the fusel, a multipoint layering sampling device 7 arranged on the extraction tank 5 is used for sampling and analyzing by the multipoint layering sampling device 7, the material on the upper part of the extraction tank 5 is sent to a light component tank 8 for direct sale or use, and the material on the lower part of the extraction tank 5 is sent to a mixed alcohol tank 9 through an extraction taking-out pump 6.
In addition, when the methanol rectifying device is combined with the methanol rectifying device, the self-extraction performance of the fusel is utilized, the fusel is pre-extracted in the fusel tank 3, the material at the bottom of the fusel tank 3 is sampled and analyzed and then discharged into the underground tank 26 of the methanol rectifying device tank area, the pre-extracted fusel is conveyed to the extraction tank 5 from the fusel tank 3 through the fusel pump 4, the material at the bottom of the extraction tank 5 is discharged into the underground tank 26 of the methanol rectifying device tank area after extraction, and the material discharged into the underground tank 26 of the methanol rectifying device tank area by the fusel tank 3 and the extraction tank 5 is returned to the methanol rectifying system for product utilization.
The third step: the mixed alcohol of the mixed alcohol tank 9 is preheated by the methanol recovery preheater 11 through the feeding pump 10 of the methanol recovery tower and the discharged wastewater at the bottom of the ethanol recovery tower 18, and then enters the methanol recovery tower 12, the top gas of the methanol recovery tower 12 enters the methanol collecting tank 14 through the first circulating water cooler 13, then a part of the top gas enters the top of the methanol recovery tower 12 through the methanol reflux pump 15 to serve as reflux, the other part of the top gas enters the methanol product tank 23 as a methanol product, a part of the bottom liquid of the methanol recovery tower 12 is heated by the reboiler 16 of the methanol recovery tower and then circularly refluxed to the methanol recovery tower 12, and the other part of the bottom liquid is sent to the ethanol recovery tower 18 through the feeding pump 17 of the ethanol recovery tower.
The fourth step: the gas at the top of the ethanol recovery tower 18 enters an ethanol collecting tank 20 after passing through a second circulating water cooler 19, then a part of the gas enters the top of the ethanol recovery tower 18 as reflux liquid through an ethanol reflux pump 21, the other part of the gas enters an ethanol product tank 24 as an ethanol product, a part of the liquid at the bottom of the ethanol recovery tower 18 is heated by an ethanol recovery tower reboiler 22 and then circularly flows back to the ethanol recovery tower 18, the other part of the liquid preheats the mixed alcohol from a methanol recovery tower feed pump 10 through a methanol recovery preheater 11 through a wastewater pump 25, and the heat is discharged as wastewater after being recovered. In addition, when the device is combined with the existing methanol rectifying device, the wastewater discharged by the methanol recovery preheater 11 can be merged into a wastewater system of the methanol rectifying device, and can also be used as washing water of a non-condensing gas washing tower at the top of the pre-rectifying tower, so that the whole wastewater amount is reduced.
While the present invention has been described in terms of its functions and operations with reference to the accompanying drawings, it is to be understood that the utility model is not limited to the precise functions and operations described above, and that the above-described embodiments are illustrative rather than restrictive, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope or spirit of the utility model as defined by the appended claims.
Claims (3)
1. A fusel resource comprehensive utilization device in a methanol rectification process is characterized by comprising a fusel tank (3), an extraction tank (5), a mixed alcohol tank (9), a methanol recovery tower (12), an ethanol recovery tower (18), a methanol product tank (23) and an ethanol product tank (24);
the top feed inlet of the fusel tank (3) is connected to a tank wagon (1) through a pipeline through a dump pump (2), the lower discharge outlet of the fusel tank (3) is connected to the top feed inlet of an extraction tank (5) through a pipeline through a fusel pump (4), the extraction tank (5) is provided with a multi-point layered sampling device (7), the upper discharge outlet of the extraction tank (5) is connected to a light component tank (8) through a pipeline, the lower discharge outlet of the extraction tank (5) is connected to the top feed inlet of a mixed alcohol tank (9) through an extraction pump (6), and the lower discharge outlet of the mixed alcohol tank (9) is connected to a tube pass inlet of a methanol recovery preheater (11) through a pipeline through a methanol feed tower pump (10);
the upper part feed inlet of the methanol recovery tower (12) is connected to a tube pass outlet of a methanol recovery preheater (11) through a pipeline, a top discharge outlet of the methanol recovery tower (12) is sequentially connected with a first circulating water cooler (13), a methanol collecting tank (14) and a methanol reflux pump (15) through pipelines, and a discharge outlet of the methanol reflux pump (15) is respectively connected to an upper part circulating inlet of the methanol recovery tower (12) and a methanol product tank (23) through pipelines; a methanol recovery tower reboiler (16) is connected between a circulation outlet and a circulation inlet at the lower part of the methanol recovery tower (12) through a pipeline, and a discharge outlet at the lower part of the methanol recovery tower (12) is connected to an inlet of an ethanol recovery tower feed pump (17) through a pipeline;
the upper part feed inlet of the ethanol recovery tower (18) is connected to the outlet of a feed pump (17) of the ethanol recovery tower through a pipeline, the top discharge outlet of the ethanol recovery tower (18) is sequentially connected with a second circulating water cooler (19), an ethanol collecting tank (20) and an ethanol reflux pump (21) through pipelines, and the discharge outlet of the ethanol reflux pump (21) is respectively connected to an upper part circulating inlet of the ethanol recovery tower (18) and an ethanol product tank (24) through pipelines; an ethanol recovery tower reboiler (22) is connected between a circulating outlet and a circulating inlet at the lower part of the ethanol recovery tower (18) through a pipeline, and a discharge port at the lower part of the ethanol recovery tower (18) is connected to a shell side inlet of the methanol recovery preheater (11) through a waste water pump (25) through a pipeline.
2. The comprehensive utilization device of fusel resource in methanol rectification process according to claim 1, characterized in that when being combined with a methanol rectification device, the fusel tank (3) adopts a methanol rectification device fusel tank, the fusel pump (4) adopts a methanol rectification device fusel pump, the light component tank (8) adopts a methanol rectification device light component tank, and the methanol product tank (23) adopts a methanol rectification device methanol product tank.
3. The comprehensive utilization device of fusel resource in methanol rectification process as claimed in claim 2, wherein when the comprehensive utilization device is combined with a methanol rectification device, the lower discharge ports of the fusel tank (3) and the extraction tank (5) are connected to the tank field underground tank (26) of the methanol rectification device through pipelines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220410611.3U CN217025828U (en) | 2022-02-28 | 2022-02-28 | Comprehensive utilization device for recycling fusel in methanol rectification process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220410611.3U CN217025828U (en) | 2022-02-28 | 2022-02-28 | Comprehensive utilization device for recycling fusel in methanol rectification process |
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| CN217025828U true CN217025828U (en) | 2022-07-22 |
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| CN202220410611.3U Active CN217025828U (en) | 2022-02-28 | 2022-02-28 | Comprehensive utilization device for recycling fusel in methanol rectification process |
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