Device for extracting neopentyl glycol for producing polymer plasticizer

Abstract

An extraction device of neopentyl glycol for producing a polymer plasticizer relates to the technical field of chemical equipment and comprises an extraction tank, a condensation tank and a purification tank which are sequentially connected, a top pipe of the extraction tank is provided with a feed pipe, a material dispersion disc is arranged below the feed pipe, an extraction box is arranged below the material dispersion disc, and the extraction box is connected with the condensation tank. A feeding port is formed in one side wall of the extraction box, an L-shaped liquid outlet pipe is arranged on the opposite side wall of the extraction box, two supporting rods are arranged at the bottom of the extraction box, one ends of the two supporting rods are hinged to the bottom of the extraction box, the other ends of the supporting rods are hinged to the tops of the left sliding block and the right sliding block respectively, and the left sliding block and the right sliding block are connected with a lead screw through threads. The left thread and the right thread are connected with the two supporting rods respectively, the thread directions of the left thread and the right thread are opposite, and the bottoms of the left thread and the right thread are inserted into the limiting grooves through the limiting plates respectively. The neopentyl glycol extraction device for producing the polymer plasticizer can efficiently complete the extraction work.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical equipment technical field, concretely relates to a neopentyl glycol's extraction device for polymer plasticizer production. BACKGROUND

[0002] The production of polymer plasticizer cannot leave neopentyl glycol, but sodium formate is easy to mix in the preparation process of neopentyl glycol, and sodium formate is removed by the way of layered extraction generally, and the existing extraction device has the problems of incomplete separation and affecting product purity. UTILITY MODEL CONTENTS

[0003] The utility model discloses a kind of neopentyl glycol's extraction device for polymer plasticizer production, it efficiently completes neopentyl glycol extraction work.

[0004] In order to solve the problems existing in the background art, the utility model is adopted as follows: including extraction tank, condensing tank and purification tank, extraction tank, condensing tank and purification tank are connected in turn, extraction tank top pipe is equipped with feed pipe, the bottom of feed pipe is inserted into extraction tank, material dispersing disc is equipped below feed pipe, extraction box is equipped below material dispersing disc, sealing pad is equipped around extraction box, one side wall of extraction box is equipped with feed inlet, feed inlet is connected with solvent inlet pipe by material conveying hose, opposite side wall of extraction box is equipped with L-shaped liquid outlet pipe, the bottom of extraction box is equipped with two support rods, one end of two support rods is hinged with the bottom of extraction box, the other end of support rod is respectively hinged with the top of left slide block and right slide block, left slide block and right slide block are connected by screw thread with lead screw, lead screw is divided into left screw thread and right screw thread, left screw thread and right screw thread are connected with two support rods respectively, the screw thread direction of left screw thread and right screw thread is opposite, the bottom of left screw thread and right screw thread is respectively inserted into limiting groove by limiting plate;The lead screw is connected with motor.

[0005] The side wall of extraction tank is equipped with connecting pipe, one end of connecting pipe is connected with curved pipeline, curved pipeline is located in condensing tank, hot water outlet pipe and cold water inlet pipe are respectively arranged on the top and bottom of condensing tank.

[0006] The outlet end of curved pipeline in the condensing tank is connected with the purification tank.

[0007] The L-shaped liquid outlet pipe is connected with the connecting pipe.

[0008] The lower part of the purification tank is a storage cavity, and the upper part is a gas storage cavity.

[0009] The utility model discloses a beneficial effect is comprehensive, convenient to use, through the cooperation of the lifting extraction box and condensing tank and purification tank, the extraction work of neopentyl glycol is efficiently completed, and the product quality is improved, and the production of polymer plasticizer is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the structure schematic diagram of the utility model. DETAILED DESCRIPTION

[0011] Referring Figure 1 , the utility model discloses the following implementation ways are adopted specifically: including extraction tank 1, condensing tank 5 and purification tank 24, extraction tank 1, condensing tank 5 and purification tank 24 connect in proper order, extraction tank 1 top pipe is equipped with feed pipe 3, and feed pipe 3 bottom inserts into extraction tank 1, and feed pipe 3 below is equipped with material dispersion disc 2, and material dispersion disc 2 below is equipped with extraction box 11, and the periphery of extraction box 11 is equipped with sealing washer 12, and one side wall of extraction box 11 is equipped with feed inlet 13, and feed inlet 13 is connected with solvent inlet pipe 15 through material conveying hose 14, and the opposite side wall of extraction box 11 is equipped with L type liquid outlet pipe 26, and the bottom of extraction box 11 is equipped with two support rods 21, and one end of two support rods 21 is hinged with the bottom of extraction box 11, and the other end of support rod 21 is respectively hinged with the top of left sliding block 17 and right sliding block 22, and left sliding block 17 and right sliding block 22 are connected through screw thread with lead screw 19, and lead screw 19 is divided into left screw thread 18 and right screw thread 20, and left screw thread 18 and right screw thread 20 are connected with two support rods respectively, and the thread direction of left screw thread 18 and right screw thread 20 is opposite, and the bottom of left screw thread 18 and right screw thread 20 is inserted into limiting groove through limiting plate respectively;The lead screw 19 is connected with motor 16.The side wall of extraction tank 1 is equipped with connecting pipe 4, and one end of connecting pipe 4 is connected with curve type pipeline 6, and curve type pipeline 6 is located in condensing tank 5, and the top and bottom of condensing tank 5 are equipped with hot water outlet pipe 7 and cold water inlet pipe 23 respectively.The outlet end of curve type pipeline 6 in the condensing tank 5 is connected with purification tank 24.The L type liquid outlet pipe 26 is connected with the connecting pipe 4 in coordination.The lower part of purification tank 24 is storage cavity 25, and the upper part is gas storage cavity 8, and gas storage cavity 8 and storage cavity 25 are connected through communication pipe 9, and gas storage cavity 8 and storage cavity 25 are respectively equipped with discharge pipe 10.

[0012] Generally, the preparation of neopentyl glycol, using sodium formate method. In the sodium formate method, isobutyraldehyde and formaldehyde in the presence of alkaline catalyst, at 30-35 ℃, pH = 9-11 conditions condensation form hydroxyl tertiary butyl aldehyde and excess formaldehyde. This reaction produces sodium formate as a byproduct. In order to remove the sodium formate generated in the reaction, the use of extraction method is very effective. In the extraction process, by the separation of sodium formate, which is by the reaction liquid with the appropriate solvent, so that sodium formate selectively into the solvent, thus achieving the separation of neopentyl glycol. After extraction, the solution is cooled, crystallization, separation, and finally get pure neopentyl glycol product.

[0013] The extraction device for the production of polymer plasticizer neopentyl glycol is used, the mixture is transported into the extraction tank 1 through the feed pipe 3, first through the material dispersion disc 2, evenly scattered into the extraction box 11, the appropriate solvent is transported into the extraction box 11 through the solvent inlet pipe 15, the conveying hose 14 and the feed port 13, the sodium formate is dissolved in the solvent, the neopentyl glycol after extraction is free in the upper part of the extraction box 11, the motor 16 is started, the motor 16 drives the connected screw rod 19 to rotate, the left slide block 17 and the right slide block 22 on it move, because the thread direction of the left thread 18 and the right thread 20 is opposite, the left slide block 17 and the right slide block 22 approach each other or move away from each other, when the left slide block 17 and the right slide block 22 approach each other, the supporting rod 21 is lifted, driving the extraction box 11 to rise, until the L type liquid outlet pipe 26 is connected with the connecting pipe 4, the neopentyl glycol solution in the upper part of the extraction box 11 enters the curved pipe 6 through the connecting pipe 4, and is cooled in the condenser 5.

[0014] The cold water of the condenser 5 enters from the bottom cold water inlet pipe 23, and the hot water after cooling is discharged through the hot water outlet pipe 7.

[0015] The cooled neopentyl glycol enters the purification tank 24 for separation work, the crystallized neopentyl glycol is located in the storage cavity 25, and the rest of the separated gas or light material rises through the communication pipe 9 into the gas storage cavity 8. Pure neopentyl glycol and waste material are discharged through the corresponding discharge pipe 10.

[0016] In summary, the extraction device for the production of polymer plasticizer neopentyl glycol, through the cooperation of the lifting extraction box, the condenser and the purification tank, efficiently completes the extraction work of neopentyl glycol, improves the product quality, and facilitates the production of polymer plasticizer.

Claims

1. An extraction apparatus for neopentyl glycol in the production of polymer plasticizers, comprising an extraction tank (1), a condenser (5), and a purification tank (24), wherein the extraction tank (1), the condenser (5), and the purification tank (24) are connected sequentially, characterized in that: The top pipe of the extraction tank (1) is equipped with a feed pipe (3), the bottom of which is inserted into the extraction tank (1). Below the feed pipe (3) is a material dispersion plate (2), and below the material dispersion plate (2) is an extraction box (11). The extraction box (11) is surrounded by sealing gaskets (12). One side wall of the extraction box (11) is equipped with a feed inlet (13), which is connected to the solvent inlet pipe (15) through a conveying hose (14). The opposite side wall of the extraction box (11) is equipped with an L-shaped liquid outlet pipe (26). The bottom of the extraction box (11) is equipped with two support rods (21), one end of which is connected to... The bottom of the extraction box (11) is hinged, and the other end of the support rod (21) is hinged to the top of the left slider (17) and the right slider (22) respectively. The left slider (17) and the right slider (22) are connected to the lead screw (19) by threads. The lead screw (19) is divided into a left thread (18) and a right thread (20). The left thread (18) and the right thread (20) are connected to the two support rods respectively. The threads of the left thread (18) and the right thread (20) are opposite in direction. The bottom of the left thread (18) and the right thread (20) are respectively inserted into the limiting groove through the limiting plate. The lead screw (19) is connected to the motor (16).

2. The extraction apparatus for neopentyl glycol in the production of polymer plasticizers according to claim 1, characterized in that: The extraction tank (1) is provided with a connecting pipe (4) on its side wall. One end of the connecting pipe (4) is connected to a curved pipe (6). The curved pipe (6) is located inside the condenser (5). The top and bottom of the condenser (5) are respectively provided with a hot water outlet pipe (7) and a cold water inlet pipe (23).

3. The extraction apparatus for neopentyl glycol in the production of polymer plasticizers according to claim 2, characterized in that: The outlet end of the curved pipe (6) inside the condenser (5) is connected to the purification tank (24).

4. The extraction apparatus for neopentyl glycol in the production of polymer plasticizers according to claim 1, characterized in that: The L-shaped outlet pipe (26) is connected to the connecting pipe (4).

5. The extraction apparatus for neopentyl glycol in the production of polymer plasticizers according to claim 1, characterized in that: The purification tank (24) has a storage chamber (25) at the bottom and a gas storage chamber (8) at the top. The gas storage chamber (8) and the storage chamber (25) are connected by a connecting pipe (9). The gas storage chamber (8) and the storage chamber (25) are respectively provided with discharge pipes (10).

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