CN210683646U

CN210683646U - Furfuryl alcohol hydrogenation device

Info

Publication number: CN210683646U
Application number: CN201921808928.7U
Authority: CN
Inventors: 侯士攀; 张磊
Original assignee: Jiyuan Hairong Chemical Co Ltd
Current assignee: Jiyuan Hairong Chemical Co Ltd
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-06-05
Anticipated expiration: 2029-10-25

Abstract

The utility model provides a furfuryl alcohol hydrogenation reaction unit, including furfural material loading pipe and hydrogen material loading pipe, furfural material loading pipe intercommunication has the material loading pump, the export intercommunication of material loading pump has the buffer, the export intercommunication of buffer has the preheater, the discharging pipe intercommunication of preheater has the tee bend, hydrogen material loading pipe intercommunication has the compressor, the export intercommunication of compressor has the buffer, the export intercommunication of buffer has the preheater, the discharging pipe intercommunication of preheater has the tee bend, the tee bend third end has hydrogenation reactor through the pipeline intercommunication, hydrogenation reactor's feed inlet and tee bend third end intercommunication, hydrogenation reactor's discharge gate intercommunication has the cooler, the export of cooler has the separator through the pipeline intercommunication, the gaseous phase export at separator top has the hydrogen recovery jar through the pipeline intercommunication, the liquid phase export of separator bottom has coarse furfuryl alcohol collection device through the pipeline intercommunication. In a word, the utility model provides high material gets into the temperature before the hydrogenation reactor, has shortened the heat time of material in the reactor, has improved production efficiency.

Description

Furfuryl alcohol hydrogenation device

Technical Field

The utility model relates to a furfuryl alcohol production technical field, concretely relates to furfuryl alcohol hydrogenation device.

Background

The furfuryl alcohol hydrogenation reaction device comprises: buffer, furfural preheater, hydrogenation reactor, cooler, high-pressure separator constitute, the hydrogenation process is then: the existing furfuryl alcohol hydrogenation reaction device adopts hydrogen and preheated furfuryl alcohol to enter from the bottom of the reactor, and the temperature of the hydrogen material is too low to quickly reach the temperature required by the reaction of the hydrogenation reactor, so that the retention time of the material in the reactor is long, the reaction is slow, the production capacity of the hydrogenation reactor in unit time is finally low, and the production efficiency is not high.

SUMMERY OF THE UTILITY MODEL

The utility model provides a furfuryl alcohol hydrogenation reaction unit, the technical problem that solve is: the temperature of the material before entering the hydrogenation reactor is improved, the heating time of the material in the reactor is shortened, and the production efficiency is improved.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a furfuryl alcohol hydrogenation reaction device comprises a furfural feeding pipe and a hydrogen feeding pipe, wherein the furfural feeding pipe is communicated with a feeding pump, the outlet of the feeding pump is communicated with a buffer, the outlet of the buffer is communicated with a preheater, the discharging pipe of the preheater is communicated with a tee joint, the hydrogen feeding pipe is communicated with a compressor, the outlet of the compressor is communicated with the buffer, the outlet of the buffer is communicated with the preheater, the discharging pipe of the preheater is communicated with the tee joint, and the third end of the tee joint is communicated with a hydrogenation reactor through a pipeline; the feed inlet of the hydrogenation reactor is communicated with the third end of the tee joint, the discharge outlet of the hydrogenation reactor is communicated with a cooler, the outlet of the cooler is communicated with a separator through a pipeline, the gas-phase outlet at the top of the separator is communicated with a hydrogen recovery tank through a pipeline, and the liquid-phase outlet at the bottom of the separator is communicated with a crude furfuryl alcohol collecting device through a pipeline.

Preferably, the preheater comprises a preheating pipe, the bottom of the preheating pipe is sealed, the top of the preheating pipe is integrally sealed by a flange, a discharge pipe and a feed pipe are arranged on the flange, the discharge pipe and the feed pipe both penetrate into the preheating pipe and are communicated by a U-shaped pipe in the preheating pipe, a steam inlet is arranged at the upper part of the preheating pipe, and a water outlet is arranged at the bottom of the preheating pipe.

Compared with the prior art, the beneficial effects of the utility model are that: by adding the hydrogen preheater, the temperature of the hydrogen before entering the hydrogenation reactor is increased from about 40 ℃ to about 100 ℃, the reaction speed of the materials in the hydrogenation reactor is accelerated, the production in unit time is increased, and the production efficiency is obviously improved. In a word, the utility model provides high material gets into the temperature before the hydrogenation reactor, has shortened the heat time of material in the reactor, has improved production efficiency.

Drawings

Fig. 1 is a general schematic diagram of the present invention;

fig. 2 is a schematic view of a preheater according to the present invention.

In the figure: 1. a furfural feeding pipe, 2, a feeding pump, 3, a buffer, 4, a preheater, 41, a preheating pipe, 42, a flange, 43, a discharging pipe, 44, a feeding pipe, 45, a steam inlet, 46, a water outlet, 47, a U-shaped pipe, 5, a hydrogenation reactor, 6, a cooler, 7, a separator, 71, a gas phase outlet, 72, a liquid phase outlet, 8, a tee joint, 9, a compressor, 10 and a hydrogen feeding pipe.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solution in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

Example (b): as shown in fig. 1 and fig. 2, the utility model provides a furfuryl alcohol hydrogenation device, including furfural material loading pipe 1 and hydrogen material loading pipe 10, furfural material loading pipe 1 intercommunication has material loading pump 2, and the export intercommunication of material loading pump 2 has buffer 3, and buffer 3 can reduce the velocity of flow of the liquid material that material loading pump 2 came out, strengthens subsequent preheating effect, and the export intercommunication of buffer 3 has preheater 4, and discharging pipe 43 intercommunication of preheater 4 has tee bend 8, hydrogen material loading pipe 10 intercommunication has compressor 9, and the export intercommunication of compressor 9 has buffer 3, and buffer 3 can reduce the velocity of flow of the liquid material that compressor 9 came out, strengthens subsequent preheating effect, and the export intercommunication of buffer 3 has preheater 4, and discharging pipe 43 intercommunication of preheater 4 has tee bend 8, and the third end of tee bend 8 has hydrogenation reactor 5 through the pipeline intercommunication; the feed inlet of hydrogenation ware 5 and the third end intercommunication of tee bend 8, the discharge gate intercommunication of hydrogenation ware 5 has cooler 6, and the export of cooler 6 has separator 7 through the pipeline intercommunication, and the gaseous phase export 71 at separator 7 top has hydrogen recovery jar (not drawn in the figure) through the pipeline intercommunication, retrieves cyclic utilization to hydrogen, and the liquid phase export 72 of separator 7 bottom has crude furfuryl alcohol collection device (not drawn in the figure) through the pipeline intercommunication, collects and subsequent processing to crude furfuryl alcohol.

Further, the preheater 4 includes a preheating pipe 41, the bottom of the preheating pipe 41 is sealed, the top of the preheating pipe 41 is integrally sealed by a flange 42, a discharging pipe 43 and a feeding pipe 44 are disposed on the flange 42, the discharging pipe 43 and the feeding pipe 44 both extend into the preheating pipe 41 and are communicated with each other by a U-shaped pipe 47 inside the preheating pipe 41, a steam inlet 45 is disposed on the upper portion of the preheating pipe 41, a water outlet 46 is disposed on the bottom of the preheating pipe 41, in this embodiment, the preheating pipe 41 is a carbon steel pipe with a diameter of 159 mm, the discharging pipe 43, the feeding pipe 44 and the steam inlet 45 are stainless steel pipes with a diameter of 32 mm, the water outlet 46 is a stainless steel pipe with a diameter of 25 mm, steam is introduced into the preheating pipe 41 through the steam inlet 45 to preheat hydrogen or furfural liquid in the U-shaped pipe 47, and the generated liquid water is discharged through the water outlet, the preheater 4 can increase the temperature of the hydrogen gas before entering the hydrogenation reactor 5 from about 40 ℃ to about 100 ℃, so that the reaction speed of the materials in the hydrogenation reactor 5 is accelerated, the production in unit time is increased, and the production efficiency is obviously improved.

The utility model provides a furfuryl alcohol hydrogenation reaction unit, in the in-service use process, the liquid raw materials that forms behind furfural and the catalyst stirring is even loops through furfural inlet pipe 1, it preheats to enter into preheater 4 behind material loading pump 2 and buffer 3, hydrogen enters into preheater 4 after compressor 9 and buffer 3 in proper order and preheats, liquid raw materials and hydrogen mix the back through tee bend 8 and continuously enter from the bottom of hydrogenation reactor 5, the material constantly goes upward in hydrogenation reactor 5, the process of going upward is reaction process, the material after the reaction is followed the top ejection of compact of hydrogenation reactor 5, reentrant separator 7 through cooler 6, the liquid material is emitted as crude furfuryl alcohol from the liquid phase export of separator 7 bottom, the hydrogen that the separator 7 top was separated then retrieves cyclic utilization, through the preheater 4 that increases hydrogen, the hydrogen temperature before will entering hydrogenation reactor 5 is improved to about 100 ℃ by about 40 ℃, the reaction speed of materials in the hydrogenation reactor is accelerated, the production capacity in unit time is increased, the production capacity of the furfuryl alcohol per hour in practical application is increased from 850 kg/kg to 1200 kg/kg, the average daily yield is increased by 8.4 tons, the annual yield can be increased by 2520 tons, and the production efficiency is obviously improved. In a word, the utility model provides high material gets into the temperature before the hydrogenation reactor, has shortened the heat time of material in the reactor, has improved production efficiency.

The principle and the embodiment of the present invention have been explained by using specific examples, and the description of the above embodiments is only used to help understand the method and the core idea of the present invention, it should be pointed out that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and these modifications and modifications also fall into the protection scope of the claims of the present invention.

Claims

1. A furfuryl alcohol hydrogenation reaction device is characterized in that: the device comprises a furfural feeding pipe (1) and a hydrogen feeding pipe (10), wherein the furfural feeding pipe (1) is communicated with a feeding pump (2), an outlet of the feeding pump (2) is communicated with a buffer (3), an outlet of the buffer (3) is communicated with a preheater (4), a discharging pipe (43) of the preheater (4) is communicated with a tee joint (8), the hydrogen feeding pipe (10) is communicated with a compressor (9), an outlet of the compressor (9) is communicated with the buffer (3), an outlet of the buffer (3) is communicated with the preheater (4), a discharging pipe (43) of the preheater (4) is communicated with the tee joint (8), and a third end of the tee joint (8) is communicated with a hydrogenation reactor (5) through a pipeline; the feed inlet of hydrogenation reactor (5) and the third end intercommunication of tee bend (8), the discharge gate intercommunication of hydrogenation reactor (5) has cooler (6), and the export of cooler (6) has separator (7) through the pipeline intercommunication, and gaseous phase export (71) at separator (7) top have the hydrogen recovery jar through the pipeline intercommunication, and liquid phase export (72) of separator (7) bottom have crude furfuryl alcohol collection device through the pipeline intercommunication.

2. The furfuryl alcohol hydrogenation reaction device according to claim 1, wherein: the preheating device (4) comprises a preheating pipe (41), the bottom of the preheating pipe (41) is sealed, the top of the preheating pipe (41) is integrally sealed by a flange (42), a discharge pipe (43) and a feed pipe (44) are arranged on the flange (42), the discharge pipe (43) and the feed pipe (44) are deep into the preheating pipe (41), the discharge pipe and the feed pipe are communicated by a U-shaped pipe (47) in the preheating pipe (41), a steam inlet (45) is arranged at the upper part of the preheating pipe (41), and a water outlet (46) is arranged at the bottom of the preheating pipe (41).