CN209810178U - Jet oxidation reactor - Google Patents
Jet oxidation reactor Download PDFInfo
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- CN209810178U CN209810178U CN201920288916.XU CN201920288916U CN209810178U CN 209810178 U CN209810178 U CN 209810178U CN 201920288916 U CN201920288916 U CN 201920288916U CN 209810178 U CN209810178 U CN 209810178U
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Abstract
The utility model discloses a jet oxidation reactor, this reactor include liquid gas sprayer, diffusion tube, connecting pipe, recovery tube, and under the suction effect of liquid gas sprayer liquid, liquid gas sprayer inhales oxygen, and oxygen and aqueous solution fully contact in liquid gas sprayer choke, take place oxidation reaction, and liquid after the oxidation reaction flows through diffusion tube, connecting pipe, output tube in proper order. The utility model discloses stop reation kettle oxygen spout and blockked up, reduced the equipment volume, increased the area of contact and the time of oxygen and solution, improved oxygen absorption efficiency.
Description
Technical Field
The utility model relates to a jet oxidation reactor belongs to new material technology chemical engineering technical field.
Background
The mixed oxidation reaction in the reaction kettle generally leads in oxygen in the solution, in order to make the oxygen fully contact with the solution, the oxygen is required to be atomized and led in the solution, and during manufacturing and processing, micron-level processing is required to be carried out on the oxygen spraying holes, so that the manufacturing difficulty is increased, on the other hand, the oxygen spraying holes are extremely easy to block during equipment operation, and the equipment needs to be frequently stopped and overhauled, and the reaction kettle has the advantages of large volume and high manufacturing cost, and brings great inconvenience to users.
SUMMERY OF THE UTILITY MODEL
The technical solution problem of the utility model is that: the jet oxidation reactor overcomes the defects of the prior art, stops the blockage of an oxygen nozzle of a reaction kettle, reduces the volume of equipment, increases the contact area and time of oxygen and solution, and improves the oxygen absorption efficiency.
The technical solution of the utility model is that: a jet oxidation reactor comprises a liquid-gas ejector, a diffusion pipe, a connecting pipe and an output pipe, wherein under the action of suction force of liquid of the liquid-gas ejector, the liquid-gas ejector sucks oxygen, the oxygen is fully contacted with aqueous solution in the liquid-gas ejector to generate oxidation reaction, and the liquid after the oxidation reaction sequentially flows out through the diffusion pipe, the connecting pipe and the output pipe.
The liquid-gas injector has a nozzle in the form of a dual stage injector.
The liquid-gas ejector comprises a power nozzle, an oxygen inlet, a receiving chamber, a secondary nozzle and a throat, wherein:
the power nozzle is inserted into the receiving chamber from the inlet end of the receiving chamber, the outlet end of the receiving chamber is communicated with the secondary nozzle, and the secondary nozzle is communicated with the throat pipe; the power nozzle is opposite to the center of the inlet of the secondary nozzle, and liquid is injected into the secondary nozzle through the power nozzle; the oxygen inlet is arranged on the side wall of the receiving chamber and introduces external oxygen into the receiving chamber; a certain gap is kept between the power nozzle and the side wall of the secondary nozzle, oxygen enters the secondary nozzle through the gap and is fully contacted with liquid to generate an oxidation reaction, and the liquid after the oxidation reaction is transmitted to the diffusion tube through the throat tube.
Preferably, the spray oxidation reactor further comprises a recovery pipe, the recovery pipe is connected with the output pipe to the liquid-gas ejector, unreacted oxygen flows back to the liquid-gas ejector through the recovery pipe, and enters the diffusion pipe again under the suction force of the fluid after the oxygen and the aqueous solution are mixed, and the circulation is repeated, so that the oxygen and the solution are fully absorbed finally.
Preferably, the liquid-gas ejector comprises a motive nozzle, an oxygen inlet, a recovery inlet, a receiving chamber, a secondary nozzle and a throat, wherein:
the power nozzle is inserted into the receiving chamber from the inlet end of the receiving chamber, the outlet end of the receiving chamber is communicated with the secondary nozzle, and the secondary nozzle is communicated with the throat pipe; the power nozzle is opposite to the center of the inlet of the secondary nozzle, and liquid is injected into the secondary nozzle through the power nozzle; the receiving chamber is internally provided with a conical partition with openings at two ends, the large end of the conical partition is hermetically arranged on the side wall of the receiving chamber, the small end of the conical partition is suspended, the opening of the small end is positioned in an annular gap between the power nozzle and the secondary nozzle and keeps a certain gap with the power nozzle and the secondary nozzle respectively, the conical partition divides the receiving chamber into two spaces, namely an oxygen inlet space and a recovery space, an oxygen inlet is arranged on the side wall of the oxygen inlet space of the receiving chamber, external oxygen is led into the oxygen inlet space, a certain gap is kept between the power nozzle and the side wall of the secondary nozzle, the oxygen enters the secondary nozzle through the gap and is fully contacted with liquid to generate oxidation reaction, and the liquid after the oxidation reaction is transmitted to the diffusion tube through the throat tube; the recovery inlet is arranged on the side wall of the recovery space of the receiving chamber, and the recovered oxygen enters the recovery space through the recovery inlet and then enters the secondary nozzle through a gap between the conical partition and the secondary nozzle.
Preferably, the power nozzle is detachable.
Preferably, the value range of the ratio of the area of the throat to the area of the power nozzle is 2.5-6.5.
Preferably, the spray oxidation reactor further comprises a backflow regulating valve, and the backflow regulating valve is installed on the recovery pipe and used for controlling the opening of the recovery pipe, regulating the backflow flow of the recovery pipe and controlling the reaction speed.
Preferably, the output pipe is horizontally arranged, and the recovery pipe is vertically arranged.
Preferably, the diffusion angle of the diffusion pipe is 3.5-4 degrees.
Preferably, the inner surface of the diffusion tube is smooth, and the roughness is below Ra1.6.
Preferably, the spray oxidation reactor further comprises an outlet regulating valve, and the outlet regulating valve is installed on the output pipe close to the outlet end and used for regulating the back pressure of the output port.
Compared with the prior art, the utility model beneficial effect be:
(1) the utility model discloses a fluid disturbance mixed mode through the speed difference between high-speed liquid and the low-speed gas, causes liquid to be broken, with the abundant disturbance of gaseous phase, forms the gas-liquid two-phase flow of misce bene, compares with traditional mixed mode, belongs to quiet equipment, and the security obtains promoting by a wide margin.
(2) The utility model discloses utilize liquid gas sprayer suction function to inhale oxygen, oxygen entering mode both can take the area to press, also negative pressure, and the jam can not appear in the entering of oxygen, and the operation is stable, maintains simply.
(3) The utility model discloses because fluid speed is very fast, and whole reaction all has to go on at the pipeline mesocycle, and the water consumption is few, does not need huge container storage solution, so equipment occupation of land space is little
(4) The utility model discloses a recovery tube will not completely react oxygen backward flow to accepting the room, under the suction of the fluidic after oxygen and aqueous solution mix, reentrant choke, the circulation is repeated, finally realizes the abundant absorption of oxygen and solution, and reaction efficiency is very high.
(5) The utility model discloses a return flow control valve can control reaction rate as required governing valve.
(6) The liquid-gas ejector of the utility model adopts the multi-stage nozzle, thereby simplifying the system flow and increasing the reaction efficiency;
(7) the utility model discloses liquid gas sprayer spray tube can be dismantled, greatly reduced maintenance cost.
(8) The utility model discloses the diffusion tube effectively recovers pressure, reduces the pressure loss, reduces the energy consumption.
(9) The utility model discloses choke gas-liquid intensive mixing forms milk white mixed fluid.
Drawings
FIG. 1 shows a first embodiment of a dual stage mixed jet reactor configuration according to the present invention.
Fig. 2 shows a second embodiment of the present invention in a two-stage mixed jet reactor configuration.
In the figure: 1 is the liquid gas sprayer, 2 is the diffusion tube, 3 is the connecting pipe, 4 is the output tube, 5 is the return flow control valve, 6 is first instrument mouth, 7 is the export governing valve, 8 is the second instrument mouth.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The utility model provides a spray oxidation reactor, this spray oxidation reactor's reaction mode be the injection formula pipeline reaction, and after the power fluid entrainment primary oxygen through power nozzle promptly, through the mixed back of second grade nozzle, the entrainment secondary unreacted oxygen that falls, the entering choke continues the mixing reaction.
The following two embodiments are described to illustrate the present invention:
example 1:
the utility model discloses a spray oxidation reactor in a specific embodiment includes liquid gas sprayer 1, diffuser 2, connecting pipe 3, output tube 4, export governing valve 7, and under the suction effect of liquid gas sprayer 1 liquid, liquid gas sprayer 1 inhales oxygen, and oxygen and aqueous solution fully contact in liquid gas sprayer 1, take place oxidation reaction, and liquid after the oxidation reaction flows out through diffuser 2, connecting pipe 3, output tube 4 in proper order. An outlet regulating valve 7 is mounted in the outlet pipe near the outlet end N3 for regulating the back pressure of the outlet. In addition, a first meter port 6 is arranged at the shunting front end of the output pipe 4 for measuring the flow rate, and a second meter port 8 is arranged near the outlet end for measuring the pressure, which respectively correspond to k2 and k1 in the figure.
The liquid-gas injector 1 has a nozzle form of a two-stage injector. The dual stage eductor comprises a motive nozzle, an oxygen inlet, a receiving chamber, a secondary nozzle, and a throat, wherein:
the power nozzle is inserted into the receiving chamber from the inlet end of the receiving chamber, the outlet end of the receiving chamber is communicated with the secondary nozzle, and the secondary nozzle is communicated with the throat pipe; the power nozzle is opposite to the center of the inlet of the secondary nozzle, and liquid is injected into the secondary nozzle through the power nozzle; the oxygen inlet is arranged on the side wall of the receiving chamber and introduces external oxygen into the receiving chamber; a certain gap is kept between the power nozzle and the side wall of the secondary nozzle, oxygen enters the secondary nozzle through the gap and is fully contacted with liquid to generate oxidation reaction, and the liquid after the oxidation reaction is transmitted to the diffusion tube 2 through the throat tube.
Example 2:
as shown in fig. 1, the spray oxidation reactor according to another embodiment of the present invention includes a liquid-gas injector 1, a diffusion pipe 2, a connection pipe 3, an outlet regulating valve 7, an output pipe 4, a recovery pipe, and a reflux regulating valve 5.
Under the action of the suction force of liquid of the liquid-gas ejector 1, the liquid-gas ejector 1 sucks oxygen, the oxygen is fully contacted with the aqueous solution in the liquid-gas ejector 1 to generate oxidation reaction, the liquid after the oxidation reaction sequentially flows out through the diffusion pipe 2, the connecting pipe 3 and the output pipe 4, the recovery pipe is connected with the output pipe 4 to the liquid-gas ejector 1, unreacted oxygen flows back to the liquid-gas ejector 1 through the recovery pipe, and enters the diffusion pipe 2 again under the suction force of the fluid after the oxygen and the aqueous solution are mixed, circulation is repeated, and the full absorption of the oxygen and the solution is finally realized.
The backflow regulating valve 5 is installed on the recovery pipe and used for controlling the opening of the recovery pipe, regulating the backflow flow of the recovery pipe and controlling the reaction speed. An outlet regulating valve 7 is mounted in the outlet pipe near the outlet end N3 for regulating the back pressure of the outlet. In addition, a first meter port 6 is arranged at the shunting front end of the output pipe 4 for measuring the flow rate, and a second meter port 8 is arranged near the outlet end for measuring the pressure, which respectively correspond to k2 and k1 in the figure.
The liquid-gas ejector 1 comprises a power nozzle, an oxygen inlet, a recovery inlet, a receiving chamber, a secondary nozzle and a throat, wherein:
the power nozzle is inserted into the receiving chamber from the inlet end N1 of the receiving chamber, the outlet end of the receiving chamber is communicated with the secondary nozzle, and the secondary nozzle is communicated with the throat pipe; the power nozzle is opposite to the center of the inlet of the secondary nozzle, and liquid is injected into the secondary nozzle through the power nozzle; the receiving chamber is also internally provided with a conical partition with openings at two ends, the large end of the conical partition is hermetically arranged on the side wall of the receiving chamber, the small end of the conical partition is suspended, the opening is positioned in a gap between the power nozzle and the secondary nozzle and keeps a certain gap between the power nozzle and the secondary nozzle respectively, the conical partition divides the receiving chamber into two spaces, namely an oxygen inlet space and a recovery space respectively, an oxygen inlet N2 is arranged on the side wall of the oxygen inlet space of the receiving chamber and guides external oxygen into the oxygen inlet space, a certain gap is kept between the power nozzle and the side wall of the secondary nozzle, the oxygen enters the secondary nozzle through the gap and is fully contacted with liquid to generate oxidation reaction, and the liquid after the oxidation reaction is transmitted to the diffusion tube 2 through the throat tube; the recovery inlet is arranged on the side wall of the recovery space of the receiving chamber, and the recovered oxygen enters the recovery space through the recovery inlet and then enters the secondary nozzle through a gap between the conical partition and the secondary nozzle.
The liquid entering the liquid-gas ejector 1 passes through the power nozzle, the flow rate is increased, the static pressure is reduced, a low-pressure area is formed in the receiving chamber, the oxygen at the oxygen inlet N2 is sucked in, the mixed gas-liquid mixture passes through the secondary nozzle, the speed is increased and the pressure is reduced again, the oxygen which is not reacted by the recovery pipe is sucked in, and finally the oxygen is fully mixed at the throat. Because of the speed difference between gas and liquid, the continuous liquid is broken by the gas and is fully mixed in the throat pipe, the contact area of the gas and the liquid is greatly increased, and a milky mixture is formed in the connecting pipe, the reaction effect is optimal at the moment, the flow of oxygen at the N2 position of the oxygen inlet can be calculated according to the pressure and the flow of the power liquid, the oxygen pressure and the back pressure of a sucked inlet, the reaction time can be adjusted by adjusting the adjusting valve of the recovery pipe, the calculation method is based on the Sokov equation of the ejector, and the resistance coefficient and the empirical parameters are determined according to experimental data on the basis.
The utility model discloses a suction effect of liquid gas sprayer, will once oxygen suction throat, oxygen and aqueous solution speed sharply increase in the throat, because liquid kinetic energy is far greater than oxygen kinetic energy, gas and liquid produce the speed difference, the broken atomizing of liquid, fully contact reaction with oxygen, because speed is very fast, part oxygen does not reach the reaction, utilize governing valve control oxygen backward flow, make unreacted oxygen backward flow to the suction chamber, under the suction force of the fluid after oxygen and aqueous solution mix, the reentrant throat, the circulation is repeated, finally realize the abundant absorption of oxygen and solution.
In order to achieve sufficient mixing of oxygen and the solution, the following preferred schemes can be selected in the two embodiments:
the value range of the ratio of the area of the throat pipe to the area of the power nozzle is 2.5-6.5, and specific values are obtained by substituting parameters such as flow pressure of power liquid, system back pressure, oxygen pressure and the like into an energy conservation, momentum conservation and mass conservation formula for iterative calculation.
The mixing effect is determined by the ratio of the sectional area of the throat pipe to the sectional area of the secondary nozzle, and the ratio of the area of the throat pipe to the area of the secondary nozzle ranges from 1.75 to 4.5.
The throat length is generally not less than 6 throat diameters.
In order to ensure that gas and liquid in the recovery pipe can be separated, the output pipe 4 is horizontally arranged, and the recovery pipe is vertically arranged.
In order to reduce energy loss, the inner surface of the diffusion tube is smooth and has no protrusions, and the diffusion angle is less than 4 degrees, preferably 3.5-4 degrees.
Because the liquid-gas ejector has the suction characteristic, oxygen entering the receiving chamber can be under pressure or negative pressure. The liquid flow velocity of the input end of the jet pipe is 1-5 m/s. The flow velocity of the fluid after passing through the nozzle can reach 15 m/s-30 m/s, which is determined by the pressure difference between the front and the back of the secondary nozzle when the instantaneous flow velocity and the fluid property are unchanged.
As shown in figure 2, the solution is sprayed from an N1 port, the pressure is generally 0.35-1.0 MPa (A), primary oxygen is introduced from an N2 port, the gas-liquid volume ratio is about 0.1-0.3, the optimal reaction time is determined by adjusting the opening degree of a reflux adjusting valve according to the reaction time until the mixed liquid becomes milk white, and the reacted liquid stably flows out of an N3 port by adjusting the back pressure of an outlet adjusting valve.
Parts of the specification which are not described in detail are within the common general knowledge of a person skilled in the art.
Claims (12)
1. The utility model provides a jet oxidation reactor, its characterized in that includes liquid gas sprayer (1), diffuser pipe (2), connecting pipe (3), output tube (4), under the suction effect of liquid gas sprayer (1) liquid, liquid gas sprayer (1) inhales oxygen, and oxygen and aqueous solution fully contact in liquid gas sprayer (1), take place oxidation reaction, and liquid after the oxidation reaction flows through diffuser pipe (2), connecting pipe (3), output tube (4) in proper order.
2. A jet oxidation reactor as claimed in claim 1, characterized in that the liquid-gas injector (1) has the form of a double-stage injector.
3. A jet oxidation reactor according to claim 2, characterized in that the liquid-gas injector (1) comprises a motive nozzle, an oxygen inlet, a receiving chamber, a secondary nozzle and a throat, wherein:
the power nozzle is inserted into the receiving chamber from the inlet end of the receiving chamber, the outlet end of the receiving chamber is communicated with the secondary nozzle, and the secondary nozzle is communicated with the throat pipe; the power nozzle is opposite to the center of the inlet of the secondary nozzle, and liquid is injected into the secondary nozzle through the power nozzle; the oxygen inlet is arranged on the side wall of the receiving chamber and introduces external oxygen into the receiving chamber; a certain gap is kept between the power nozzle and the side wall of the secondary nozzle, oxygen enters the secondary nozzle through the gap and is fully contacted with liquid to generate oxidation reaction, and the liquid after the oxidation reaction is transmitted to the diffusion tube (2) through the throat tube.
4. A jet oxidation reactor as claimed in claim 1, further comprising a recovery pipe connecting the output pipe (4) to the liquid-gas injector (1), wherein the unreacted oxygen gas flows back to the liquid-gas injector (1) through the recovery pipe, and enters the diffusion pipe (2) again under the suction force of the fluid after the oxygen and the aqueous solution are mixed, and the cycle is repeated, so as to finally realize the sufficient absorption of the oxygen gas and the solution.
5. A jet oxidation reactor according to claim 4, characterized in that the liquid-gas injector (1) comprises a motive nozzle, an oxygen inlet, a recovery inlet, a receiving chamber, a secondary nozzle and a throat, wherein:
the power nozzle is inserted into the receiving chamber from the inlet end of the receiving chamber, the outlet end of the receiving chamber is communicated with the secondary nozzle, and the secondary nozzle is communicated with the throat pipe; the power nozzle is opposite to the center of the inlet of the secondary nozzle, and liquid is injected into the secondary nozzle through the power nozzle; the receiving chamber is internally provided with a conical partition with openings at two ends, the large end of the conical partition is hermetically arranged on the side wall of the receiving chamber, the small end of the conical partition is suspended, the opening of the small end is positioned in an annular gap between the power nozzle and the secondary nozzle and keeps a certain gap with the power nozzle and the secondary nozzle respectively, the conical partition divides the receiving chamber into two spaces, namely an oxygen inlet space and a recovery space, an oxygen inlet is arranged on the side wall of the oxygen inlet space of the receiving chamber, external oxygen is led into the oxygen inlet space, a certain gap is kept between the power nozzle and the side wall of the secondary nozzle, the oxygen enters the secondary nozzle through the gap and is fully contacted with liquid to generate oxidation reaction, and the liquid after the oxidation reaction is transmitted to the diffusion tube (2) through the throat tube; the recovery inlet is arranged on the side wall of the recovery space of the receiving chamber, and the recovered oxygen enters the recovery space through the recovery inlet and then enters the secondary nozzle through a gap between the conical partition and the secondary nozzle.
6. A spray oxidation reactor according to claim 3 or 5, wherein said motive nozzle is removable.
7. A spray oxidation reactor according to claim 3 or claim 5, wherein the ratio of the throat area to the motive nozzle area is in the range 2.5 to 6.5.
8. A jet oxidation reactor as claimed in claim 4, further comprising a back-flow regulating valve (5), wherein the back-flow regulating valve (5) is installed on the recovery pipe for controlling the opening of the recovery pipe, regulating the back-flow rate of the recovery pipe, and controlling the reaction speed.
9. A jet oxidation reactor as claimed in claim 4, characterized in that the outlet conduit (4) is arranged horizontally and the recovery conduit is arranged vertically.
10. A spray oxidation reactor according to claim 1, characterized in that the diffusion angle of the diffusion tube (2) is 3.5 to 4 °.
11. A spray oxidation reactor according to claim 1, characterized in that the inner surface of the diffuser tube (2) is smooth with a roughness below ra 1.6.
12. A spray oxidation reactor according to claim 1, further comprising an outlet regulating valve (7), the outlet regulating valve (7) being mounted in the outlet conduit adjacent the outlet end for regulating the back pressure at the outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920288916.XU CN209810178U (en) | 2019-03-07 | 2019-03-07 | Jet oxidation reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920288916.XU CN209810178U (en) | 2019-03-07 | 2019-03-07 | Jet oxidation reactor |
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| Publication Number | Publication Date |
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| CN209810178U true CN209810178U (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920288916.XU Active CN209810178U (en) | 2019-03-07 | 2019-03-07 | Jet oxidation reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109759001A (en) * | 2019-03-07 | 2019-05-17 | 北京航化节能环保技术有限公司 | A kind of injection oxidation reactor |
-
2019
- 2019-03-07 CN CN201920288916.XU patent/CN209810178U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109759001A (en) * | 2019-03-07 | 2019-05-17 | 北京航化节能环保技术有限公司 | A kind of injection oxidation reactor |
| CN109759001B (en) * | 2019-03-07 | 2024-07-23 | 北京航化节能环保技术有限公司 | Jet oxidation reactor |
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