Bisphenol A type diether dianhydride purification device

Abstract

The utility model discloses a bisphenol A type diether dianhydride purification device, which comprises a heating jacket tank, a feeding component, a discharging component, a discharging component, a stirring component and a heating component, a sealing cover is arranged at the top of the heating jacket tank, the feeding component comprises a feeding port arranged at the top of the sealing cover, and a spraying pipe is arranged at the bottom end of the feeding port; the purification assembly comprises an absorption part arranged on the inner wall of the heating jacket tank, a supporting ring is arranged on the inner wall of the heating jacket tank, a heat transfer pipe is arranged at the joint of the absorption part and the inner wall of the heating jacket tank, and the liquid inlet end of the heat transfer pipe is communicated with the interlayer of the heating jacket tank; the heat transfer pipe is arranged at the joint of the absorption part and the inner wall of the heating jacket tank, so that heat-conducting fluid flows through the absorption part to evaporate and discharge moisture absorbed by the absorption part, and compared with interlayer heating of the heating jacket tank, the heat transfer area of the inner wall of the heating jacket tank and the absorption part is increased, and the heat transfer efficiency is improved. Therefore, the problem of slow water discharge caused by limitation of the heat conduction area is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of bisphenol A type diether dianhydride production equipment, especially to a bisphenol A type diether dianhydride purification device. BACKGROUND

[0002] In the production process of bisphenol A type diether dianhydride, the synthetic product often contains a certain amount of moisture, which needs to be effectively removed to improve the purity and quality of the product. The traditional purification device usually uses a heating jacketed tank, which absorbs the moisture in the product through the multi-layer activated carbon inside. Then, the interlayer of the jacketed tank circulates high-temperature fluid to evaporate the moisture in the activated carbon. The moisture in the activated carbon is removed to facilitate the reabsorption of the activated carbon to the product moisture.

[0003] However, due to the limited contact area between the inner wall of the heating jacketed tank and the activated carbon absorption part, the heat transfer area is limited, which makes the moisture discharge process of the activated carbon relatively slow. This leads to a time-consuming process of purifying the moisture of the product. Therefore, to solve the above problems, the utility model provides a bisphenol A type diether dianhydride purification device. SUMMARY

[0004] The purpose of the utility model is to provide a bisphenol A type diether dianhydride purification device to solve the problems raised in the background.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a bisphenol A type diether dianhydride purification device, comprising a heating jacketed tank, the top of the heating jacketed tank is provided with a sealing cover, further comprising:

[0006] A feeding assembly is used for feeding the product. The feeding assembly includes a feeding port provided on the top of the sealing cover. The bottom end of the feeding port is provided with a spray pipe in the inner cavity of the sealing cover.

[0007] A purification assembly is used for absorbing impurities in the product. The purification assembly includes an absorption part provided on the inner wall of the heating jacketed tank. The inner wall of the heating jacketed tank is provided with a support ring for supporting the absorption part. The connection between the absorption part and the inner wall of the heating jacketed tank is provided with a heat transfer pipe for heating the absorption part. The inlet end of the heat transfer pipe is connected with the interlayer of the heating jacketed tank.

[0008] Preferably, the absorption part includes a supporting net provided on the top of the support ring. The top of the supporting net is provided with a bottom layer of activated carbon. The top of the bottom layer of activated carbon is sequentially provided with a middle layer of activated carbon and a high layer of activated carbon. The heat transfer pipe is arranged on the opposite side of the bottom layer of activated carbon and the middle layer of activated carbon. The opposite side of the heat transfer pipe and the middle layer of activated carbon is provided with a separation piece.

[0009] Preferably, the isolation piece comprises an isolation net arranged on the top of the heat transfer pipe, which is used to separate the middle layer activated carbon from the heat transfer pipe.

[0010] Preferably, the heating jacket tank is provided with a heating fluid inlet on the top side and a heating fluid outlet on the bottom side.

[0011] Preferably, the inner wall of the heating jacket tank is provided with a baffle plate for isolating the impact of the fluid on the inner wall of the heating jacket tank.

[0012] Preferably, the top of the sealing cover is provided with a gas outlet for recovering the gas in the product.

[0013] Preferably, the bottom of the heating jacket tank is provided with a clean material outlet for purifying the outflow of the product.

[0014] Preferably, the top of the sealing cover is symmetrically provided with a lifting ring for lifting and placing the sealing cover.

[0015] Technical effects and advantages of the present application:

[0016] The present application sets the heat transfer pipe on the inner wall of the heating jacket tank, and the heat transfer pipe is arranged at the connection between the absorption part and the inner wall of the heating jacket tank, so that the heat conducting fluid flows through the absorption part to evaporate and discharge the moisture in the product absorbed by the absorption part. Compared with the heating of the heating jacket tank layer, this way increases the heat transfer area of the inner wall of the heating jacket tank and the absorption part, thereby avoiding the problem of slow moisture discharge caused by limited heat transfer area. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0018] Figure 2 It is a top view of the overall structure of the present application.

[0019] Figure 3 It is a sectional view of the overall structure of the present application.

[0020] Figure 4 It is a schematic diagram of the structure of the heat transfer pipe of the present application.

[0021] In the figure: 1, heating jacket tank; 10, spray pipe; 101, clean material outlet; 102, heating fluid outlet; 103, heating fluid inlet; 104, baffle plate; 2, sealing cover; 201, feed inlet; 202, gas outlet; 203, lifting ring; 3, heat transfer pipe; 4, support ring; 5, supporting net; 6, bottom layer activated carbon; 7, middle layer activated carbon; 8, isolation net; 9, high layer activated carbon. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0023] The utility model provides a kind of bisphenol A type diether dianhydride purification device as Figures 1-4 As shown in a kind of bisphenol A type diether dianhydride purification device, including heating jacket tank 1, the top of heating jacket tank 1 is provided with sealing cover 2, further include: feed assembly and purification assembly;

[0024] It needs to be explained that heating jacket tank 1 and sealing cover 2 are fixed using multiple bolts and nuts, heating jacket tank 1 top side is provided with heating fluid inlet 103, and the bottom side of heating jacket tank 1 is provided with heating fluid outlet 102;

[0025] Specifically, the inner wall of the interlayer of heating jacket tank 1 is welded with a baffle 104, which is used to isolate the impact of the fluid on the inner wall of the interlayer of heating jacket tank 1, and the high-temperature fluid is introduced into the interlayer of heating jacket tank 1 through the heating fluid inlet 103 and the heating fluid outlet 102 to heat the inner cavity of heating jacket tank 1.

[0026] The top of sealing cover 2 is welded with a gas outlet 202, which is used for the recovery of gas in the product, mainly the outflow of moisture, and the bottom of heating jacket tank 1 is provided with a clean material outlet 101 for the outflow of the purified product, and the top of sealing cover 2 is symmetrically welded with a lifting ring 203, which is used for the lifting and placement of sealing cover 2.

[0027] Specifically, the feed assembly is used for feeding the product, and the feed assembly includes a feed port 201 arranged on the top of sealing cover 2, and a spray pipe 10 welded at the bottom end of feed port 201 and located in the inner cavity of sealing cover 2.

[0028] It needs to be explained that the product enters the spray pipe 10 from the feed port 201, and the spray nozzle on the surface of the spray pipe 10 is used for spraying the product.

[0029] Specifically, the purification assembly is used for absorbing impurities in the product, and the purification assembly includes an absorption part arranged on the inner wall of heating jacket tank 1, and the inner wall of heating jacket tank 1 is provided with a support ring 4 for supporting the absorption part, and the connection between the absorption part and the inner wall of heating jacket tank 1 is provided with a heat transfer pipe 3 for heating the absorption part, and the inlet end of heat transfer pipe 3 is connected with the interlayer of heating jacket tank 1.

[0030] It should be noted that the support ring 4 is welded and fixed with the inner wall of the heating jacket tank 1, the heat transfer pipe 3 is welded and fixed by using a stainless steel pipe, and the ports of the heat transfer pipe 3 are communicated with the interlayer of the heating jacket tank 1, and the ports of the heat transfer pipe 3 are welded and fixed with the interlayer;

[0031] Specifically, the absorption part includes a supporting net 5 arranged at the top of the support ring 4, the top of the supporting net 5 is provided with a bottom layer of activated carbon 6, the top of the bottom layer of activated carbon 6 is sequentially provided with a middle layer of activated carbon 7 and a high layer of activated carbon 9, the heat transfer pipe 3 is arranged at the opposite side of the bottom layer of activated carbon 6 and the middle layer of activated carbon 7, and the opposite side of the heat transfer pipe 3 and the middle layer of activated carbon 7 is provided with a separation piece;

[0032] It should be noted that the supporting net 5 is a stainless steel net, the particle diameter of the bottom layer of activated carbon 6 is smaller than that of the middle layer of activated carbon 7, and the particle diameter of the middle layer of activated carbon 7 is smaller than that of the high layer of activated carbon 9;

[0033] Specifically, the separation piece includes a separation net 8, the separation net 8 is arranged at the top of the heat transfer pipe 3, and the separation net 8 is used for separating the middle layer of activated carbon 7 and the heat transfer pipe 3;

[0034] It should be noted that the through hole diameter of the separation net 8 is smaller than the particle diameter of the middle layer of activated carbon 7, so that the middle layer of activated carbon 7 cannot pass through the separation net 8;

[0035] In actual use, the activated carbon absorption part absorbs water in the product, the product stops spraying, the heat transfer pipe 3 is arranged on the inner wall of the heating jacket tank 1, the heat transfer pipe 3 is arranged at the connection between the absorption part and the inner wall of the heating jacket tank 1, so that the heat conducting fluid flows through the absorption part interlayer, and the water in the product absorbed by the activated carbon absorption part is evaporated and discharged, compared with the heating of the interlayer of the heating jacket tank 1, this kind of mode increases the heat transfer area of the inner wall of the heating jacket tank 1 and the absorption part, thereby avoiding the problem that the water in the product is discharged slowly due to the limited heat transfer area, thereby avoiding that the subsequent product is sprayed into the inner cavity of the heating jacket tank 1 for subsequent water absorption and purification treatment.

[0036] Finally, it should be noted that the above only describes the preferred embodiments of the present application, and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A device for purifying bisphenol-A diether dianhydride, comprising a heating jacketed tank (1), the top of which is provided with a sealing cover (2), characterized in that, Also include: The feed assembly for the feed of product, the feed assembly includes the feed port (201) arranged at the top of the sealing cover (2), the bottom end of the feed port (201) and located in the inner cavity of the sealing cover (2) is provided with a spray pipe (10); The purification assembly for absorbing impurities in the product, the purification assembly includes an absorption part arranged on the inner wall of the heating jacket tank (1), the inner wall of the heating jacket tank (1) is provided with a support ring (4) for supporting the absorption part, the connection between the absorption part and the inner wall of the heating jacket tank (1) is provided with a heat transfer pipe (3) for heating the absorption part, the inlet end of the heat transfer pipe (3) is communicated with the interlayer of the heating jacket tank (1).

2. The bisphenol-A diether dianhydride purification apparatus according to claim 1, wherein The absorption part includes a supporting net (5) arranged at the top of the support ring (4), the top of the supporting net (5) is provided with a bottom layer of activated carbon (6), the top of the bottom layer of activated carbon (6) is sequentially provided with a middle layer of activated carbon (7) and a high layer of activated carbon (9), the heat transfer pipe (3) is arranged at the opposite side of the bottom layer of activated carbon (6) and the middle layer of activated carbon (7), and the opposite side of the heat transfer pipe (3) and the middle layer of activated carbon (7) is provided with a separation piece.

3. The bisphenol-A diether dianhydride purification apparatus according to claim 2, wherein The separation piece includes a separation net (8), the separation net (8) is arranged at the top of the heat transfer pipe (3), and the separation net (8) is used for separating the middle layer of activated carbon (7) and the heat transfer pipe (3).

4. The bisphenol-A diether dianhydride purification apparatus of claim 1, wherein The top side of the heating jacket tank (1) is provided with a heating fluid inlet (103), and the bottom side of the heating jacket tank (1) is provided with a heating fluid outlet (102).

5. The bisphenol-A diether dianhydride purification apparatus according to claim 4, wherein The inner wall of the interlayer of the heating jacket tank (1) is provided with a baffle (104) for isolating the impact of the fluid on the inner wall of the interlayer of the heating jacket tank (1).

6. The bisphenol-A diether dianhydride purification apparatus of claim 5, wherein The top of the sealing cover (2) is provided with a gas outlet (202) for recovering gas in the product.

7. The bisphenol-A diether dianhydride purification apparatus of claim 5, wherein The bottom of the heating jacket tank (1) is provided with a clean material outlet (101) for purifying the outflow of product.

8. The bisphenol-A diether dianhydride purification apparatus of claim 6, wherein The top of the sealing cover (2) is symmetrically provided with a lifting ring (203), and the lifting ring (203) is used for lifting and placing the sealing cover (2).

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