CN212039904U - A high-efficient gas-liquid mixture device for xylene oxidation reaction - Google Patents
A high-efficient gas-liquid mixture device for xylene oxidation reaction Download PDFInfo
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- CN212039904U CN212039904U CN202020352442.3U CN202020352442U CN212039904U CN 212039904 U CN212039904 U CN 212039904U CN 202020352442 U CN202020352442 U CN 202020352442U CN 212039904 U CN212039904 U CN 212039904U
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Abstract
The utility model discloses a high-efficient gas-liquid mixing device for xylol oxidation reaction relates to a gas-liquid mixing device in chemical industry on-the-spot production equipment field, and the structure includes xylol oxidation reactor, sets up the circulating pump behind xylol oxidation reactor liquid material export, sets up the jet pump type gas-liquid mixer between the export of circulating pump and xylol oxidation reactor upper portion feed inlet. The utility model discloses at the outside circulating pump and the jet pump type gas-liquid mixer that increases of xylol oxidation reactor, utilize the circulating pump with the high-speed jet pump type gas-liquid mixer that enters into of liquid material, liquid material and gaseous formation torrent form make the boundary layer of gas-liquid mixture thinner, double-phase contact surface is bigger, brings higher mass transfer effect, can improve oxidation reaction's speed greatly, is favorable to stabilizing oxidation production process and product quality, the utility model relates to a simple structure, easy operation.
Description
Technical Field
The utility model relates to a gas-liquid mixing device in the field of chemical field production equipment, in particular to a high-efficiency gas-liquid mixing device for oxidation reaction of dimethylbenzene.
Background
The existing oxidation system adopts a gas-liquid mixing mode as follows: compressed air enters the coil type gas distributor from the bottom of the xylene oxidation reactor.
The coil pipe type gas distributor used in the traditional process has the defects that the diameter of bubbles is large, the reactor is not designed for rapid stirring, the gas-liquid mixing effect is poor, the gas-liquid mixing degree is low, the oxidation reaction process is influenced, the oxidation reaction rate is reduced, the reaction time is prolonged, side reactions are increased, the yield is reduced, three wastes are increased, the workshop production is unstable, and the production cost is increased.
SUMMERY OF THE UTILITY MODEL
The method aims at solving the problems that the traditional process has large and uneven bubble diameter of gas distribution in reaction liquid in the oxidation process, poor gas-liquid mixing effect and low gas-liquid mixing degree, influences the oxidation reaction process, and causes reduction of oxidation reaction rate, extension of reaction time, increase of side reaction, reduction of yield, increase of three wastes and the like. The utility model aims at providing a high-efficient gas-liquid mixture reaction unit for xylol oxidation reaction solves this problem.
The utility model discloses a following technical scheme realizes:
the utility model provides a high-efficient gas-liquid mixing device for xylol oxidation reaction, includes, xylol oxidation reactor, sets up the circulating pump behind xylol oxidation reactor liquid material export, sets up the jet pump type gas-liquid mixer between circulating pump export and xylol oxidation reactor upper portion feed inlet. The liquid material in the reactor enters a jet pump type gas-liquid mixer under the action of a circulating pump, the reaction liquid and the gas are fully mixed in the jet pump type gas-liquid mixer, and the gas is quickly dispersed by the liquid at a higher speed to form a highly turbulent flow form.
Furthermore, a discharge valve is arranged at a liquid material outlet at the bottom of the xylene oxidation reactor, and the discharge valve comprises a valve leading to an inlet of the circulating pump and a valve leading to the liquid material outlet.
Further, the jet pump type gas-liquid mixer comprises a liquid inlet arranged at the top of the jet pump type gas-liquid mixer, an air inlet arranged on the side surface above the jet pump type gas-liquid mixer, a liquid material outlet arranged at the bottom of the jet pump type gas-liquid mixer, and a mixing cavity arranged in the jet pump type gas-liquid mixer.
Further, compressed air is introduced into an air inlet of the jet pump type air-liquid mixer.
Further, the liquid inlet extends into the jet pump type gas-liquid mixer and is internally provided with a spray head. Because the utility model discloses liquid passes through the circulating pump input, therefore liquid gets into jet pump type gas-liquid mixer's pressure itself just very big, can not use the shower nozzle, nevertheless for making liquid pressure is bigger, can increase the shower nozzle setting.
Further, the width of the mixing cavity from the liquid inlet to the liquid material outlet is wide-narrow-wide-narrow in sequence. Because the utility model discloses a liquid is the high-pressure liquid of circulating pump transport, therefore behind the liquid entering blender, gaseous also can high-speed entering blender, can be directly with the fixed value of width of hybrid chamber, nevertheless mix for better messenger's gas-liquid, set gradually the hybrid chamber from the inlet to the width of liquid material export wide-narrow-wide-narrow, carry out polymerization dispersion mixing many times.
The feed liquid in the xylene oxidation reactor is pumped into an injection pump type gas-liquid mixer through a circulating pump, is fully mixed with the compressed air sent from the previous procedure in the injection pump type gas-liquid mixer, and then returns to the xylene oxidation reactor.
In the device, gas is quickly dispersed by liquid at a higher speed to form a highly turbulent flow form, the diameter of the gas is thinned by 5-6 times, so that a boundary layer of gas-liquid mixture is thinner, the contact surface of two phases is larger, and a higher mass transfer effect is brought.
The beneficial effects of the utility model reside in that: the utility model discloses at the outside circulating pump and the jet pump type gas-liquid mixer that increases of xylol oxidation reactor, utilize the circulating pump to make liquid material high-speed enter into jet pump type gas-liquid mixer in, make and produce the low pressure in the gas-liquid mixer, with gaseous suction to the mixed intracavity, the utility model discloses a compressed air enables in gaseous faster enters into the mixer, liquid material and gaseous formation torrent form refine 5-6 times gas diameter, make gas-liquid mixture's boundary layer thinner, and double-phase contact surface is bigger, brings higher mass transfer effect. The defects of large bubble diameter, uneven distribution, uneven gas-liquid mixing and the like caused by factors such as small gas-liquid contact area and the like due to large gas outlets of the gas distribution coil pipes in the original oxidation process are overcome. The oxidation reaction rate is greatly improved, the stable oxidation production process and the product quality are facilitated, the utility model has the advantages of simple design and structure and easy operation.
Drawings
FIG. 1: an efficient gas-liquid mixing device for oxidation reaction of dimethylbenzene, wherein an arrow indicates a liquid material or other flowing directions;
FIG. 2: an injection pump type gas-liquid mixer;
in the figure: the device comprises a xylene oxidation reactor 1, a circulating pump 2, an injection pump type gas-liquid mixer 3, a liquid inlet 3-1, an air inlet 3-2, a liquid material outlet 3-3, a mixing cavity 3-4, a spray head 3-5 and a valve 4.
Detailed Description
A high-efficiency gas-liquid mixing device for the oxidation reaction of xylene comprises a xylene oxidation reactor 1, a circulating pump 2 arranged behind the liquid material outlet of the xylene oxidation reactor 1, and a jet pump type gas-liquid mixer 3 arranged between the outlet of the circulating pump 2 and the feeding hole at the upper part of the xylene oxidation reactor; a valve 4 is arranged at a liquid material outlet at the bottom of the xylene oxidation reactor 1 and comprises a valve leading to an inlet of a circulating pump and a valve leading to a liquid material outlet; the jet pump type gas-liquid mixer 3 comprises a liquid inlet 3-1 arranged at the top of the jet pump type gas-liquid mixer 3, an air inlet 3-2 arranged on the side surface above the jet pump type gas-liquid mixer 3, a liquid outlet 3-3 arranged at the bottom of the jet pump type gas-liquid mixer, and a mixing cavity 3-4 arranged in the jet pump type gas-liquid mixer, wherein the liquid inlet 3-1 extends into the jet pump type gas-liquid mixer 3 and is internally provided with a spray head 3-5, and the width of the mixing cavity 3-4 from the liquid inlet 3-1 to the liquid outlet 3-3 is wide-narrow-wide-narrow in sequence.
The specific working mode is as follows:
and closing a valve of a liquid material outlet, opening a valve leading to an inlet of a circulating pump, pumping the liquid material in the dimethylbenzene oxidation reactor 1 into the jet pump type gas-liquid mixer 3 from a liquid inlet of the jet pump type gas-liquid mixer 3 through the circulating pump 2, allowing the liquid material and the compressed air fed from the previous procedure to enter the jet pump type gas-liquid mixer 3 in an air inlet 3-2, fully mixing the liquid material and the compressed air in a mixing cavity 3-4 of the jet pump type gas-liquid mixer 3, and then returning to the dimethylbenzene oxidation reactor 1.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not make the essential desulfurization of the corresponding technical solutions within the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. The utility model provides a high-efficient gas-liquid mixing device for xylene oxidation reaction which characterized in that: the device comprises a xylene oxidation reactor (1), a circulating pump (2) arranged behind a liquid material outlet of the xylene oxidation reactor (1), and a jet pump type gas-liquid mixer (3) arranged between the outlet of the circulating pump (2) and an upper feed inlet of the xylene oxidation reactor (1).
2. The efficient gas-liquid mixing device for the oxidation reaction of xylene according to claim 1, characterized in that the outlet of the liquid material at the bottom of the xylene oxidation reactor (1) is provided with a valve (4) comprising a valve leading to the inlet of the circulating pump and a valve discharging the oxidation liquid material from the device.
3. The efficient gas-liquid mixing device for the oxidation reaction of xylene according to claim 1, wherein the jet pump type gas-liquid mixer (3) comprises a liquid inlet (3-1) disposed at the top of the jet pump type gas-liquid mixer (3), a gas inlet (3-2) disposed at the upper side of the jet pump type gas-liquid mixer (3), a liquid outlet (3-3) disposed at the bottom of the jet pump type gas-liquid mixer (3), and a mixing chamber (3-4) disposed inside the jet pump type gas-liquid mixer (3).
4. The high efficiency gas-liquid mixing device for xylene oxidation reaction according to claim 3, wherein said air inlet (3-2) is supplied with compressed air.
5. The efficient gas-liquid mixing device for the oxidation reaction of xylene according to claim 3, wherein the liquid inlet (3-1) is extended into a spray head (3-5) provided in the jet pump type gas-liquid mixer (3).
6. The efficient gas-liquid mixing device for the oxidation reaction of xylene according to claim 3, wherein the width of the mixing chamber (3-4) from the liquid inlet (3-1) to the liquid outlet (3-3) is wide-narrow-wide-narrow in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020352442.3U CN212039904U (en) | 2020-03-19 | 2020-03-19 | A high-efficient gas-liquid mixture device for xylene oxidation reaction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020352442.3U CN212039904U (en) | 2020-03-19 | 2020-03-19 | A high-efficient gas-liquid mixture device for xylene oxidation reaction |
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| Publication Number | Publication Date |
|---|---|
| CN212039904U true CN212039904U (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020352442.3U Active CN212039904U (en) | 2020-03-19 | 2020-03-19 | A high-efficient gas-liquid mixture device for xylene oxidation reaction |
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| CN (1) | CN212039904U (en) |
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2020
- 2020-03-19 CN CN202020352442.3U patent/CN212039904U/en active Active
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