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Processing device for producing propylene glycol and use method thereof

A processing device and technology of propylene glycol, which are applied in separation methods, chemical instruments and methods, separation/purification of hydroxyl compounds, etc., can solve the problems of shortening the heating time of hydrogen and glycerol solutions, inability to integrate propylene glycol, and high water content of propylene glycol, To achieve the effect of improving synthesis efficiency, improving purification efficiency and purification effect, and improving purification effect

Inactive Publication Date: 2021-10-15
DONGYING HEBANG CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a processing device for producing propylene glycol and its use method. By setting the preheating component, the heat in the propylene glycol solution can be effectively utilized to save energy, and the propylene glycol solution can be cooled. By The preheating sleeve is set to preheat the hydrogen and glycerin twice to ensure the preheating effect. By preheating the hydrogen and glycerin, the heating time of the hydrogen and glycerin solution in the synthesis reactor is shortened, which not only improves the synthesis efficiency , and it is beneficial to keep the temperature inside the synthesis reactor constant. By combining the stirring component, the exhaust component and the structure for spraying the propylene glycol solution into one, the three complement each other, which significantly speeds up the evaporation of water and improves the temperature of the propylene glycol solution. The purification efficiency and purification effect are good, and the use effect is good, which solves the problem that the existing propylene glycol processing device directly inputs hydrogen and glycerin solution into the reactor, and it takes a certain time to heat up the hydrogen gas and glycerin solution, which reduces the synthesis efficiency and the temperature of propylene glycol after synthesis. It is relatively high, the heat in it cannot be effectively utilized, and the water content in the synthesized propylene glycol is relatively high, the synthesis of propylene glycol and the operation of removing water cannot be integrated, and the use effect is poor

Method used

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  • Processing device for producing propylene glycol and use method thereof
  • Processing device for producing propylene glycol and use method thereof
  • Processing device for producing propylene glycol and use method thereof

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0047] Such as Figure 1-5 As shown, a kind of processing device that the present invention proposes is used to produce propylene glycol, comprises synthesis reactor 1, purification storage tank 2, hydrogen input pipe 21, glycerol input pipe 22, hydrogen output pipe 23 and glycerol output pipe 24, synthesis reaction The still 1 is fixed on the top of the purification storage tank 2 through the installation frame, and the bottom of the synthesis reaction kettle 1 is provided with a discharge pipe with a valve, and a connecting pipe 6 is installed on the discharge pipe, and the other end of the connecting pipe 6 is connected to the purification storage tank. 2 connection, the synthesis reactor 1 is equipped with a pressure relief pipe communicating with it, and the pressure relief pipe is provided with a valve. When the pressure in the synthesis reaction kettle 1 is too high, the pressure relief pipe discharges the internal gas to play a protective role, purify and store An evap...

Embodiment 2

[0053] Such as figure 1 with figure 2 As shown, the difference between this embodiment and Embodiment 1 is that the end of the infusion tube 19 away from the second U-shaped pipe 502 is equipped with a return tube 26 and a collection tube 27, and a temperature sensor is installed in the infusion tube 19, and the infusion is controlled by the temperature sensor. The temperature of the propylene glycol solution output in the pipe 19 is detected, and the other end of the return pipe 26 is communicated with the heat preservation storage chamber 4, and the other end of the collection pipe 27 is connected with the propylene glycol collection box 25, and the return pipe 26 and the collection pipe 27 are all provided with valves, When the temperature data of the liquid in the infusion tube 19 is less than a certain value, the valve on the collection pipe 27 is opened, and the propylene glycol solution flows back into the propylene glycol collection box 25 through the collection pipe ...

Embodiment 3

[0055] Such as Figure 5 , Image 6 with Figure 10 As shown, the difference between this embodiment and Embodiment 1 and Embodiment 2 is that a liquid inlet chamber 9 is provided in the purification storage tank 2, and the connecting pipe 6 communicates with the liquid inlet chamber 9, and the connecting pipe 6 synthesizes in the synthesis reactor 1 The propylene glycol solution is transported into the liquid inlet chamber 9, and a drive motor 12 is fixedly installed on the purification storage box 2 through a motor base. A hollow rotating rod 10 is arranged horizontally in the evaporation purification chamber 3, and one end of the hollow rotating rod 10 extends into the liquid inlet chamber. In the cavity 9 and communicated with it, the other end of the hollow rotating rod 10 is connected to the output end of the driving motor 12, and the driving motor 12 is used to drive the hollow rotating rod 10;

[0056] The outer peripheral surface of the hollow rotating rod 10 is equ...

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Abstract

The invention belongs to the technical field of propylene glycol production, and aims to solve the problems of low synthesis efficiency, incapability of integrating synthesis and dehydration operation of propylene glycol and poor use effect due to the fact that heating of hydrogen and a glycerol solution needs a certain time in the conventional propylene glycol processing device. In particular, the invention provides a processing device for producing propylene glycol and a use method thereof. The processing device comprises a synthesis reaction kettle, the synthesis reaction kettle is fixed to the top of a purification storage box, and an evaporation purification chamber and a heat preservation storage chamber are formed in the purification storage box; through the arrangement of the preheating assembly, heat in a propylene glycol solution can be effectively utilized, hydrogen and glycerin can be preheated, the heating time of the hydrogen and glycerin solution in the synthesis reaction kettle is shortened, and the synthesis efficiency is improved; the stirring assembly, the exhaust assembly and the structure for spraying the propylene glycol solution are combined, so that evaporation of water is remarkably accelerated, and the water content of the propylene glycol solution is reduced.

Description

technical field [0001] The invention relates to the technical field of propylene glycol production, in particular to a processing device for producing propylene glycol and a usage method thereof. Background technique [0002] Propylene glycol is generally sealed and stored in a cool and dry place. It can be stored in iron, mild steel, copper, tin, stainless steel containers or resin-coated containers. It can be miscible with water, ethanol and various organic solvents. Propylene glycol can be used as unsaturated The raw material of polyester resin, it can be used as a wetting agent in combination with glycerin or sorbitol in cosmetics, toothpaste and toilet soap, and it can be used as a moisture-conditioning and hair leveling agent in hair dyes, as well as an antifreeze agent, and also used in cellophane, Plasticizer and pharmaceutical industry; [0003] At present, most of the industry uses propylene oxide water method to synthesize propylene glycol, and the production cos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/00B01D1/30B01D1/00C07C29/60C07C29/76C07C31/20
CPCB01J19/0013B01D1/00B01D1/30C07C29/60C07C29/76C07C31/205
Inventor 刘红军王栋栋张羽景超
Owner DONGYING HEBANG CHEM CO LTD
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