Energy-saving BDO rectification device

Abstract

The utility model relates to the technical field of rectification energy-saving equipment, and discloses an energy-saving BDO rectification device which comprises a distillation outer cylinder, the bottom end of the distillation outer cylinder is communicated with a steam communicating pipe, a rectification inner cylinder is arranged in the distillation outer cylinder, the top end of the distillation outer cylinder is provided with a top closing cover, and the bottom end of the distillation outer cylinder is provided with a bottom closing cover. According to the distillation device disclosed by the utility model, steam required by distillation is introduced into the distillation outer cylinder through the steam communicating pipe, and excessive-waste-heat steam entering the distillation outer cylinder can enter the storage and placement box through the first air inlet pipe; the BDO raw material stored in the BDO raw material storage cylinder in the storage and placement box is preheated, so that excessive waste heat steam in the distillation outer cylinder can be fully utilized, no additional heat source is needed for preheating the BDO raw material in the process, the use of hot steam resources is effectively saved, the cost required by production is reduced, and an effective energy-saving effect is achieved; and the use of a user is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to rectification energy -conserving equipment technical field, concretely is a kind of energy -conserving BDO rectification device. BACKGROUND

[0002] BDO (1,4-butanediol) is an important organic chemical and fine chemical raw material, which can generate various derivatives such as THF, PTMEG, GBL, etc. BDO and its derivatives can be widely used in PBT plastic, spandex, polyurethane, pharmaceutical, cosmetics and other fields. At present, the mainstream production technology is aldehyde-acetylene method, that is, acetylene and formaldehyde are used as raw materials to react under the action of catalyst in the reactor to generate 1,4-butyne diol (BYD), while water, methanol and other by-products are generated. These mixtures are sent to the formaldehyde circulating tower to recover formaldehyde to the previous reaction section, and the mixture of BYD and water in the tower pot enters the precision filtration system; the mixture of BYD and water enters the hydrogenation reactor after removing the catalyst by precision filtration, and BYD reacts to generate BDO, and the hydrogenation product enters the concentration tower to remove water, while the concentration of BDO is increased; high-concentration BDO enters the salt tower to remove salt, and the mixture of BDO and water at the top is taken out to enter the low-boiling tower to remove water and other low-boiling substances at the top of the low-boiling tower, and the material in the tower pot enters the high-boiling tower; a small amount of heavy components are taken out from the high-boiling tower, a small amount of light components are taken out from the top of the high-boiling tower, and the product BDO is taken out from the side line.

[0003] Since the existing BDO raw material is colorless or light yellow oily liquid, additional preheating is required during the rectification feeding process to ensure the smoothness of BDO raw material feeding, but the additional preheating increases the use of resources, and the heat source in the overall device is not effectively utilized, thereby increasing the rectification cost of BDO raw material, and the effective energy-saving effect cannot be achieved. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides an energy-saving BDO rectification device, which solves the problem that the existing BDO raw material is colorless or light yellow oily liquid, and additional preheating is required during the rectification feeding process to ensure the smoothness of BDO raw material feeding, but the additional preheating increases the use of resources, and the heat source in the overall device is not effectively utilized, thereby increasing the rectification cost of BDO raw material, and the effective energy-saving effect cannot be achieved.

[0005] The utility model provides the following technical scheme: an energy-saving BDO rectification device, comprising a distillation outer cylinder, a steam communication pipe is communicated at the bottom end of the distillation outer cylinder, a rectification inner cylinder is arranged in the distillation outer cylinder, a top closure cover is arranged at the top end of the distillation outer cylinder, and a pressure relief valve is arranged at the top end of the side edge of the distillation outer cylinder;

[0006] The top end of the rectification inner cylinder is communicated with a top output pipe, the top end of the top output pipe penetrates through the top closed cover, a rectification screen is arranged in the rectification inner cylinder, the side of the distillation outer cylinder is provided with a storage box, the storage box is provided with a BDO raw material storage cylinder, the side of the BDO raw material storage cylinder is provided with a feeding pipe, the feeding pipe is provided with a pipe opening closing cover, the top end of the storage box is provided with a suction pump, the input end of the suction pump is communicated with a material suction pipe, the material suction pipe penetrates through the top of the BDO raw material storage cylinder and extends to the bottom of the BDO raw material storage cylinder, the distillation outer cylinder and the storage box are communicated through a first air inlet pipe, the side of the storage box is provided with a material feeding preheating bin, two first feeding bins are symmetrically arranged at the two ends in the material feeding preheating bin, the two first feeding bins are communicated through a plurality of feeding conveying pipes, the output end of the suction pump is communicated with a material conveying pipe, the material conveying pipe is communicated with the right first feeding bin, the left first feeding bin is communicated with a second air inlet pipe, and the end of the second air inlet pipe penetrates through the distillation outer cylinder and is inserted into the rectification inner cylinder.

[0007] Preferably, the bottom end of the material feeding preheating bin is communicated with a third air inlet pipe, and the end of the third air inlet pipe is communicated with the storage box.

[0008] Preferably, the top end of the material feeding preheating bin is communicated with a fourth air inlet pipe, and the end of the fourth air inlet pipe is communicated with the distillation outer cylinder.

[0009] Preferably, the rectification inner cylinder and the inner wall of the distillation outer cylinder are fixedly connected through a connecting block.

[0010] The rectification inner cylinder is stably arranged in the distillation outer cylinder.

[0011] Preferably, a plurality of air permeable holes are uniformly arranged on the rectification screen.

[0012] The BDO raw material in the rectification inner cylinder moves upward when being distilled.

[0013] Preferably, the BDO raw material storage cylinder and the storage box are fixedly connected through a connecting block.

[0014] The BDO raw material storage cylinder is stably arranged in the storage box.

[0015] Compared with the prior art, the BDO rectification device has the following beneficial effects:

[0016] The utility model discloses a steam communication pipe is passed through to the steam required by rectification is passed into to the distillation outer tube, and the redundant hot steam in the distillation outer tube can enter the storage and place box through the first air inlet pipe, and the BDO raw material stored in the BDO raw material storage cylinder in the storage and place box is preheated, and the hot steam enters the loading preheating bin again through the third air inlet pipe, and the BDO raw material in the feeding pipe in the loading preheating bin is preheated again, thereby the redundant hot steam in the distillation outer tube can be fully utilized, and the process does not need to additionally increase the heat source preheating of BDO raw material, effectively saves the use of hot steam resources, reduces the cost required in production, reaches the effective energy -conserving effect, and is more convenient for the use of user. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structure perspective view of the utility model;

[0018] Figure 2 It is the structure section view of the utility model;

[0019] Figure 3 It is the structure of the utility model Figure 2 The structure enlarged view of top closure cover;

[0020] Figure 4 It is the structure of the utility model Figure 2 The structure enlarged view of storage and place box.

[0021] In the drawing: 1, distillation outer tube;2, steam communication pipe;3, rectification inner tube;4, top closure cover;5, pressure relief valve;6, top output pipe;7, rectification screen;8, storage and place box;9, BDO raw material storage cylinder;10, feeding pipe;11, pipe orifice closure cover;12, suction pump;13, suction pipe;14, first air inlet pipe;15, loading preheating bin;16, first feeding bin;17, feeding delivery pipe;18, material delivery pipe;19, second air inlet pipe;20, third air inlet pipe;21, fourth air inlet pipe. DETAILED DESCRIPTION

[0022] Please refer to Figures 1-4 ,

[0023] Example one: a kind of energy-saving BDO rectification device, including distillation outer tube 1, the bottom end of distillation outer tube 1 is communicated with steam communication pipe 2, rectification inner tube 3 is arranged in distillation outer tube 1, top closure cover 4 is arranged at the top end of distillation outer tube 1, and pressure relief valve 5 is arranged at the top end of the side of distillation outer tube 1.

[0024] The top end of the rectification inner cylinder 3 is communicated with a top output pipe 6, the top end of the top output pipe 6 penetrates through the top closed cover 4, the rectification inner cylinder 3 is provided with a rectification screen 7, the side of the distillation outer cylinder 1 is provided with a storage box 8, the storage box 8 is provided with a BDO raw material storage cylinder 9, the side of the BDO raw material storage cylinder 9 is provided with a feeding pipe 10, the feeding pipe 10 is provided with a pipe opening closing cover 11, the top end of the storage box 8 is provided with a suction pump 12, the input end of the suction pump 12 is communicated with a material suction pipe 13, the material suction pipe 13 penetrates through the top of the BDO raw material storage cylinder 9 and extends to the bottom of the BDO raw material storage cylinder 9, and the distillation outer cylinder 1 and the storage box 8 are communicated through the first air inlet pipe 14.

[0025] The side of the storage box 8 is provided with a feeding preheating bin 15, two first feeding bins 16 are symmetrically arranged at both ends in the feeding preheating bin 15, the two first feeding bins 16 are communicated through a plurality of feeding conveying pipes 17, the output end of the suction pump 12 is communicated with a material conveying pipe 18, the material conveying pipe 18 is communicated with the right first feeding bin 16, the left first feeding bin 16 is communicated with a second air inlet pipe 19, the end of the second air inlet pipe 19 penetrates through the distillation outer cylinder 1 and is inserted into the rectification inner cylinder 3, the bottom end of the feeding preheating bin 15 is communicated with a third air inlet pipe 20, the end of the third air inlet pipe 20 is communicated with the storage box 8, and the top end of the feeding preheating bin 15 is communicated with a fourth air inlet pipe 21, the end of the fourth air inlet pipe 21 is communicated with the distillation outer cylinder 1.

[0026] Embodiment two: the difference between this embodiment and embodiment one is that the rectification inner cylinder 3 and the inner wall of the distillation outer cylinder 1 are fixedly connected through the connecting block.

[0027] The rectification inner cylinder 3 is stably arranged in the distillation outer cylinder 1.

[0028] Embodiment three: the difference between this embodiment and embodiment one is that a plurality of air holes are uniformly arranged on the rectification screen 7.

[0029] The BDO raw material in the rectification inner cylinder 3 moves upward when being distilled.

[0030] Embodiment four: the difference between this embodiment and embodiment one is that the BDO raw material storage cylinder 9 and the storage box 8 are fixedly connected through the connecting block.

[0031] The BDO raw material storage cylinder 9 is stably arranged in the storage box 8.

[0032] In the embodiment, since the existing BDO raw material is colorless or light yellow oily liquid, and in the process of feeding, it needs to be additionally preheated to ensure the smoothness of BDO raw material feeding, but the additional preheating increases the use of resources, and the heat source in the whole device is not effectively utilized, thereby increasing the distillation cost of BDO raw material, and not achieving effective energy saving effect.

[0033] In summary, when the user needs to distill the BDO raw material, the user first injects the BDO raw material into the BDO raw material storage cylinder 9 through the feeding pipe 10, and then connects the high-temperature steam into the distillation outer cylinder 1 through the steam communication pipe 2, and the bottom end of the distillation outer cylinder 1 is connected with the storage box 8 through the first air inlet pipe 14, and the excess steam can enter the storage box 8 through the first air inlet pipe 14 to preheat the BDO raw material stored in the BDO raw material storage cylinder 9, thereby improving the flowability of the BDO raw material, and the steam entering the storage box 8 can also enter the feeding preheating bin 15 through the third air inlet pipe 20, thereby preheating the plurality of feeding conveying pipes 17 arranged in the feeding preheating bin 15.

[0034] Then, the user can start the suction pump 12, so that the suction pump 12 pumps the BDO raw material in the BDO raw material storage cylinder 9 into the feeding pipe 18 through the feeding pipe 13, and then into the plurality of feeding conveying pipes 17 through the feeding pipe 18, and the preheated BDO raw material can flow better in the feeding conveying pipe 17, thereby avoiding the problem of BDO raw material adhering to the feeding conveying pipe 17 and causing blockage, and then being injected into the distillation inner cylinder 3 through the second air inlet pipe 19.

[0035] At this time, the distillation steam injected into the distillation outer cylinder 1 can heat the distillation inner cylinder 3, so that the BDO raw material entering the distillation inner cylinder 3 is heated and distilled, and the preheated BDO raw material can be heated and distilled faster, and the steam injected into the distillation outer cylinder 1 can be fully and effectively utilized, and the BDO raw material does not need to be additionally preheated by the heat source, thereby effectively saving the use of hot steam resources, reducing the cost required for production, achieving effective energy saving effect, and being more convenient for the user to use.

Claims

1. An energy-saving BDO rectification device comprising a distillation outer cylinder (1), characterized in that: The bottom end of the distillation outer cylinder (1) is communicated with a steam communication pipe (2), the distillation outer cylinder (1) is provided with a rectification inner cylinder (3), the top end of the distillation outer cylinder (1) is provided with a top closed cover (4), and the top end of the side edge of the distillation outer cylinder (1) is provided with a pressure relief valve (5). The top end of the rectification inner cylinder (3) is communicated with a top output pipe (6), the top end of the top output pipe (6) penetrates the top closed cover (4), the rectification inner cylinder (3) is provided with a rectification screen (7), the side edge of the distillation outer cylinder (1) is provided with a storage box (8), the storage box (8) is provided with a BDO raw material storage cylinder (9), the side edge of the BDO raw material storage cylinder (9) is provided with a feeding pipe (10), the feeding pipe (10) is provided with a pipe opening closing cover (11), the top end of the storage box (8) is provided with a suction pump (12), the input end of the suction pump (12) is communicated with a material suction pipe (13), the material suction pipe (13) penetrates the top of the BDO raw material storage cylinder (9) and extends to the bottom of the BDO raw material storage cylinder (9), the distillation outer cylinder (1) and the storage box (8) are communicated through the first air inlet pipe (14), the side edge of the storage box (8) is provided with a material feeding preheating bin (15), two first feeding bins (16) are symmetrically arranged at both ends in the material feeding preheating bin (15), a plurality of feeding conveying pipes (17) are arranged between the two first feeding bins (16) and communicated, the output end of the suction pump (12) is communicated with a material conveying pipe (18), the material conveying pipe (18) is communicated with the right first feeding bin (16), the left first feeding bin (16) is communicated with a second air inlet pipe (19), and the end of the second air inlet pipe (19) penetrates the distillation outer cylinder (1) and is inserted into the rectification inner cylinder (3).

2. The energy efficient BDO rectification apparatus as claimed in claim 1, wherein: The bottom end of the material feeding preheating bin (15) is communicated with a third air inlet pipe (20), and the end of the third air inlet pipe (20) is communicated with the storage box (8).

3. The energy efficient BDO rectification apparatus as claimed in claim 2, wherein: The top end of the material feeding preheating bin (15) is communicated with a fourth air inlet pipe (21), and the end of the fourth air inlet pipe (21) is communicated with the distillation outer cylinder (1).

4. The energy efficient BDO rectification apparatus as claimed in claim 3, wherein: The rectification inner cylinder (3) and the inner wall of the distillation outer cylinder (1) are fixedly connected through the arranged connecting blocks.

5. The energy efficient BDO rectification apparatus as claimed in claim 4, wherein: A plurality of air permeable holes are uniformly arranged on the rectification screen (7).

6. The energy efficient BDO rectification apparatus as claimed in claim 5, wherein: The BDO raw material storage cylinder (9) and the storage box (8) are fixedly connected through the arranged connecting blocks.

Images