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High-purity dimethyl ester batch rectification device

A dimethyl ester, high-purity technology, applied in the field of distillation and separation, can solve the problems of uneven mixing of dimethyl ester raw materials, increase of follow-up process time, unsatisfactory rectification effect, etc., to increase sealing, avoid gas leakage, The effect of reducing waste

Active Publication Date: 2022-03-11
安徽弋尚纺织科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The rectification method of dimethyl sulfate and methyl formate is the same. Inhomogeneity causes waste of raw materials, increases the time of subsequent processes, and at the same time leads to unsatisfactory rectification effect and low fractionation efficiency

Method used

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  • High-purity dimethyl ester batch rectification device
  • High-purity dimethyl ester batch rectification device
  • High-purity dimethyl ester batch rectification device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] see Figure 2-Figure 6 As shown, in the embodiment of the present invention, a high-purity dimethyl ester batch rectification device includes a rectification kettle 1, a reaction cover 2 is connected to the top of the rectification kettle 1, and the inner wall of the rectification kettle 1 is fixedly arranged Fixed rod 17 is arranged, and the outer cover of fixed rod 17 is provided with reciprocating swing mechanism 7; The shaft is rotatably connected with a sliding seat 23 , the surface of the sliding seat 23 is penetrated with a limit slide bar 21 , and the limit slide bar 21 is slidably connected with the slide seat 23 .

[0029] When in use, one end of the transmission arm 18 is movably connected with the sliding seat 23, and the sliding seat 23 slides on the upper limit of the limit sliding rod 21, and then drives the movement of the transmission arm 18, so that the swinging member 24 reciprocates and accelerates rectification. The dimethyl ester raw material in k...

Embodiment 2

[0040] see figure 2 As shown, the inner cavity of the rectification kettle 1 is provided with a heating chamber 28, and the inside of the heating chamber 28 is provided with a heating plate 29, and the bottom side of the rectification kettle 1 is provided with a waste heat outlet 27 communicating with the heating chamber 28, and the waste heat outlet 27 One end is connected with a waste heat collection box 14 for waste heat recovery and utilization.

[0041] see figure 2 As shown, the top of the gas outlet 3 is connected with a conveying pipeline 4, and one end of the conveying pipeline 4 is connected with a rectifying tower 15, and the inside of the rectifying tower 15 is provided with a packing layer 16, and the top of the rectifying tower 15 is connected with a condensation tower through a pipeline. device.

[0042] During use, the rectification kettle 1 is heated and rectified by the heating plate 29, and the gas generated by the rectification enters the rectification ...

Embodiment 3

[0044] see Figure 2-Figure 6 As shown, the connection between the rectifying kettle 1 and the reaction cover 2 is covered with an annular sleeve plate 30, and the top and bottom ends of the annular sleeve plate 30 are equipped with a miniature cylinder 31, and the inner wall of the annular sleeve plate 30 is slidingly connected with the upper miniature cylinder. The upper clamping plate 32 affixed to the end of the piston rod of the cylinder 31 is fitted with a lower clamping plate 33 affixed to the end of the piston rod of the miniature cylinder 31 below.

[0045] When in use, the annular cover plate 30 can be directly placed on the junction of the rectification kettle 1 and the reaction cover 2, and the upper and lower clamping plates 32 and the lower clamping plate 33 are respectively pushed by the upper and lower miniature cylinders 31 to move, and the upper clamping plate 32 and the lower clamping plate The clamping plate 33 is attached to the top of the reaction cover 2...

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Abstract

The invention discloses a high-purity dimethyl ester batch rectification device, and particularly relates to the technical field of distillation separation, the high-purity dimethyl ester batch rectification device comprises a rectification kettle, the top end of the rectification kettle is connected with a reaction cover, the inner wall of the rectification kettle is fixedly provided with a fixed rod, and the fixed rod is sleeved with a reciprocating swing mechanism. The reciprocating swing mechanism is driven by the servo gear motor, so that the swing blades and the ratchet plates on the swing blades swing in a reciprocating manner, dimethyl ester raw materials in the rectifying kettle can be uniformly mixed, the dimethyl ester raw materials are enabled to be more fully and thoroughly rectified in cooperation with the use of the stirring blades and the stirring paddles, the utilization rate of the rectified raw materials is increased, and the production cost is reduced. The two micro air cylinders push the upper clamping plate and the lower clamping plate to move respectively, the first rubber mat and the second rubber mat are attached to the outer wall face of the reaction cover and the outer wall face of the rectifying still, the sealing performance of the reaction cover and the rectifying still is improved, the rectifying quality is improved, and redundant hot air generated by the heating plate is conveyed into the waste heat collecting box to be recycled.

Description

technical field [0001] The invention relates to the technical field of distillation and separation, in particular to a high-purity dimethyl ester batch rectification device. Background technique [0002] Dimethyl sulfate is a colorless or yellowish transparent oily liquid, which is an important chemical raw material for organic synthesis. It is mainly used as a methylating agent in medicine, pesticide and other industries. Batch distillation is also called batch distillation. At the beginning of the batch rectification operation, all the materials are added to the rectification tower, and then gradually heated and vaporized. After the steam drawn from the top of the tower is condensed, part of it is used as a distillate product, and the other part is sent back to the tower as a reflux. After falling to the specified value, discharge it at one time, and then carry out the next batch of rectification operation. figure 1 It is a structural diagram of the prior art. By controll...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D3/14B01D3/30B01D3/32C07C303/44C07C305/08
CPCB01D3/14B01D3/30B01D3/32C07C303/44C07C305/08
Inventor 陈伟林绍辉陈双龙
Owner 安徽弋尚纺织科技有限公司
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