CN212663504U - Acetylene hydrochlorination catalytic reaction single-tube side-line test device - Google Patents
Acetylene hydrochlorination catalytic reaction single-tube side-line test device Download PDFInfo
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- CN212663504U CN212663504U CN202021335123.8U CN202021335123U CN212663504U CN 212663504 U CN212663504 U CN 212663504U CN 202021335123 U CN202021335123 U CN 202021335123U CN 212663504 U CN212663504 U CN 212663504U
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Abstract
The utility model relates to a single-tube side-line test device for acetylene hydrochlorination catalytic reaction, which comprises a jacket pipe and a reaction tube, wherein the body of the reaction tube is arranged in the jacket pipe, the upper end of the jacket pipe is provided with a hot water inlet, and the lower end of the jacket pipe is provided with a hot water outlet; the part of the tube body of the reaction tube, which extends out of the upper end of the jacket tube, is provided with a mixed gas inlet, and the part of the tube body of the reaction tube, which extends out of the lower end of the jacket tube, is provided with a reaction gas outlet; a thermocouple is arranged in the reaction tube, a plurality of temperature measuring electrodes are arranged on the thermocouple, a ceramic ring is sleeved on each temperature measuring electrode, the thermocouple is divided into an upper thermocouple and a lower thermocouple, the upper thermocouple is downwards inserted into the body of the reaction tube from the upper end of the reaction tube, and the lower thermocouple is upwards inserted into the body of the reaction tube from the lower end of the reaction tube; protective sleeves are arranged outside the upper thermocouple and the lower thermocouple, and the catalytic reaction environment provided by the device has the characteristic of being completely consistent with the production working condition of the industrial converter, so that the catalytic reaction process of the industrial converter is truly simulated, and accurate catalyst performance test data is provided.
Description
Technical Field
The utility model relates to a catalyst test device, especially a acetylene hydrochlorination catalytic reaction single tube side line test device.
Background
The research and use of catalysts in the production and processing of chemical industrial products has become a common concern. For example, acetylene hydrochlorination catalytic reaction is an important working section for producing PVC by a calcium carbide method, and 80 percent of PVC produced in China can be produced by the calcium carbide method.
The single-tube side-line test catalyst evaluation technology plays an important role in the catalyst industrialization process, and multiple enterprises rely on laboratory bench test data for newly developed catalysts, thereby bringing uncertainty and safety risk to industrial production.
The Chinese utility model patent, the number of the authorization notice is: CN 207516325U, bulletin date 2018.06.19, discloses a contrast evaluation device of acetylene hydrochlorination catalyst, which records a typical laboratory-built catalyst test device, which is actually a single-pipe side-line device. Although the existing single-pipe side-line device can be used for acetylene hydrochlorination catalytic reaction tests, other catalytic reaction conditions are difficult to be consistent with the production working conditions of an industrial converter, performance data such as activity, selectivity and stability of the obtained catalyst can be deviated, and the deviation of the data can cause great influence on industrial production.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve the problem among the prior art, provide a with the higher acetylene hydrochlorination catalytic reaction single tube side line test device of industrial converter production operating mode uniformity.
In order to achieve the above purpose, the invention provides the following technical scheme:
a single-tube side-line test device for acetylene hydrochlorination catalytic reaction comprises a jacket pipe and a reaction tube, wherein the body of the reaction tube is arranged in the jacket pipe, the upper end of the jacket pipe is provided with a hot water inlet, and the lower end of the jacket pipe is provided with a hot water outlet; the top of the jacket sleeve is provided with an air vent;
the upper end of the reaction tube extends out of the upper end of the jacketed pipe and is provided with a mixed gas inlet; the lower end of the reaction tube extends out of the lower end of the jacket tube and is provided with a reaction gas outlet;
a thermocouple is arranged in the reaction tube, a plurality of temperature measuring electrodes are arranged on the thermocouple, and a ceramic ring is sleeved on each temperature measuring electrode; a protective sleeve is also arranged outside the thermocouple;
the thermocouple is divided into an upper thermocouple and a lower thermocouple, the upper thermocouple is inserted into the tube body of the reaction tube from the upper end of the reaction tube downwards, and the lower thermocouple is inserted into the tube body of the reaction tube from the lower end of the reaction tube upwards.
The utility model provides a catalytic reaction environment that single tube side line test device provided is unanimous with single tube catalytic reaction industrial condition in the current industrial converter, has the characteristics unanimous with industrial converter production operating mode completely, can truly simulate industrial converter catalytic reaction process, can accurately test performances such as catalyst activity, selectivity, stability.
The following is the preferred scheme of the single-tube side-line test device for acetylene hydrochlorination catalytic reaction provided by the utility model:
the reaction tube body extends out of the lower end of the jacket tube and is internally provided with a pattern plate densely covered with through holes. The flower plate is a carbon steel plate with the diameter of 150mm, and 300 holes with the diameter of 3.5mm are densely distributed on the surface of the carbon steel plate. The structure effectively intercepts the falling of the activated carbon particles and ensures the passing capacity of the gas medium.
Three temperature measuring electrodes are arranged on the upper thermocouple at equal intervals and are respectively compiled into a first temperature measuring point, a second temperature measuring point and a third temperature measuring point from top to bottom; three temperature measuring electrodes are arranged on the lower thermocouple at equal intervals and are respectively programmed into a fourth temperature measuring point, a fifth temperature measuring point and a sixth temperature measuring point from top to bottom. The uniformly designed temperature measuring points are used for monitoring the displacement condition of the catalytic reaction hot spot.
The protective sleeves can be sleeved outside the upper thermocouple and the lower thermocouple integrally or respectively.
The size of the protective sleeve is phi 22mm, L is 2375mm, and the material is carbon steel.
The size of the jacket sleeve is phi 159mm multiplied by 6mm, L is 2896mm, and the material is carbon steel; the reaction tube has the size of phi 76mm multiplied by 4mm, L is 2996mm, and the material is carbon steel.
The 200 ceramic rings provided on each electrode of the thermocouple can ensure insulation against short circuits.
The upper part of the jacket pipe is provided with an upper support, and the lower part is provided with a lower support.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is an enlarged view of the structure at point a in fig. 1.
The labels in the figures are: the device comprises a jacketed pipe 1, a reaction pipe body 2, a thermocouple 3, an upper thermocouple 31, a lower thermocouple 32, a reaction pipe upper end 4, an upper end cover 5, a mixed gas inlet 6, an air release hole 7, a hot water inlet 8, an upper support 9, a temperature measuring electrode 10, a lower support 11, a reaction pipe lower end 12, a flower plate 13, a lower end cover 14, a reaction gas outlet 15, a hot water outlet 16 and a protective sleeve 17.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in figure 1, the utility model provides a single tube side line test device for acetylene hydrochlorination catalytic reaction, including jacketed pipe 1, reaction tube 2 and thermocouple 3.
The upper end of the jacket sleeve 1 is provided with a hot water inlet 8, the lower end of the jacket sleeve is provided with a hot water outlet 16, the top of the jacket sleeve is also provided with an air vent 7, and the outside of the jacket sleeve 1 is provided with an upper support 9 and a lower support 11. The upper support 9 is fixedly connected to the upper part of the jacket sleeve 1, the lower support 11 is fixedly connected to the lower part of the jacket sleeve 1, and the upper support 9 and the lower support 11 are used for fixing the jacket sleeve 1, so that the vertical and stable state of the jacket sleeve 1 is ensured. The utility model discloses jacket pipe 1 size sets up to phi 159mm x 6mm, and L is 2896mm, and the material is carbon steel.
The reaction tube and the jacket sleeve are sleeved together, the tube body 2 of the reaction tube is arranged in the jacket sleeve 1, and the upper end 4 of the reaction tube extends out of the upper end of the jacket sleeve 1 and is provided with a mixed gas inlet 6; the lower end 12 of the reaction tube extends beyond the lower end of the jacketed pipe 1 and is provided with a reaction gas outlet 15. The upper end of the reaction tube is provided with an upper end cover 4, and the lower end is provided with a lower end cover 14. The reaction tube lower end 12 is internally provided with a flower plate 13 densely distributed with through holes. The size of the reaction tube of the utility model is that the length L is 2996mm, the tube body of the reaction tube is phi 76mm multiplied by 4mm, and the material is carbon steel. The pattern plate 13 is a phi 150mm carbon steel plate, densely distributed small holes are manufactured on the carbon steel plate by adopting a punching technology, and 300 phi 3.5mm holes are manufactured on one phi 150mm carbon steel plate. The pattern plate 13 densely covered with the small holes effectively intercepts the falling of the active carbon particles, and simultaneously ensures the passing capacity of the gas medium.
The thermocouple 3 designed by the invention adopts a double-head opposite-insertion type access mode, the thermocouple 3 is divided into an upper thermocouple 31 and a lower thermocouple 32, the upper thermocouple 31 is downwards inserted into the reaction tube body 2 from the upper end of the reaction tube, and the lower thermocouple 32 is upwards inserted into the reaction tube body 2 from the lower end of the reaction tube. Lower thermocouple 32 is maximally close to the inner end of upper thermocouple 31.
The lower thermocouple 32 and the upper thermocouple 31 are respectively provided with a plurality of temperature measuring electrodes 10. Monitoring the thermal potential shift condition of the catalytic reaction by a hot spot displacement measurement technology. Specifically, the upper thermocouple 31 is provided with three temperature measuring electrodes 10, which are sequentially programmed into a first temperature measuring point, a second temperature measuring point and a third temperature measuring point from top to bottom. The lower thermocouple 32 is provided with three temperature measuring electrodes 10 which are sequentially programmed into a fourth temperature measuring point, a fifth temperature measuring point and a sixth temperature measuring point from top to bottom. Six temperature measuring points are used for monitoring the displacement condition of the catalytic reaction hot spot.
A ceramic ring is sleeved on a temperature measuring electrode 10 of the thermocouple 3 for insulation protection between electrodes so as to prevent short circuit. 200 ceramic rings are arranged on each electrode, and the ceramic rings are sequentially and uniformly strung on each thermoelectric electrode during installation, so that insulation is ensured, and short circuit is prevented.
A protective sleeve 17 is arranged outside the thermocouple 3. The protective sleeve 17 is 22mm phi, 2375mm L and made of carbon steel. The protective sleeve 17 is installed in the reaction tube, and may be a carbon steel tube integrally sleeved outside the upper thermocouple 31 and the lower thermocouple 32, or may be two carbon steel tubes respectively sleeved on the upper thermocouple 31 and the lower thermocouple 32.
Before the acetylene hydrochlorination reaction test, the device is filled with a catalyst in advance from a mixed gas inlet 6, and then hot water is introduced from a hot water inlet 8 to preheat the device. After the reaction tube is subjected to nitrogen replacement and dried to be qualified, introducing mixed gas from the mixed gas inlet 6 to perform catalytic reaction. It should be noted that pressure gauges are respectively installed on the mixed gas inlet pipeline, the reaction gas outlet pipeline, the hot water inlet pipeline and the hot water outlet pipeline to monitor pressure, and thermometers are respectively installed on the hot water inlet pipeline and the hot water outlet pipeline to monitor hot water temperature.
The utility model discloses the cavity between jacket pipe 1 and reaction tube body 2 lets in hot water, provides necessary temperature condition for catalytic reaction. The inside of the reaction tube body 2 of the device is a catalytic reaction chamber, and the space formed by multiplying the cross-sectional area between the thermocouple sleeve (namely the protective sleeve 17) and the reaction tube by the height is the reaction bed volume of the catalyst. The protective sleeve 17 and the diameter and length of the reaction tube are set to be the same as those of the actual working condition, and the volume and bed height of the obtained reaction bed are consistent with those of the existing industrial converter.
The invention is not limited solely to the use set forth in the description, which is susceptible to additional modifications as will be apparent to persons skilled in the art, and which is thus not limited to the specific details and embodiments shown and described herein without departing from the general concept as defined by the appended claims and their equivalents.
Claims (9)
1. The utility model provides an acetylene hydrochlorination catalytic reaction single tube side line test device, includes jacket pipe and reaction tube, and the reaction tube body sets up in jacket pipe, its characterized in that:
the upper end of the jacket pipe is provided with a hot water inlet, and the lower end of the jacket pipe is provided with a hot water outlet; the top of the jacket sleeve is provided with an air vent;
the upper end of the reaction tube extends out of the upper end of the jacketed pipe and is provided with a mixed gas inlet; the lower end of the reaction tube extends out of the lower end of the jacket tube and is provided with a reaction gas outlet;
a thermocouple is arranged in the reaction tube, a plurality of temperature measuring electrodes are arranged on the thermocouple, and a ceramic ring is sleeved on each temperature measuring electrode; a protective sleeve is arranged outside the thermocouple;
the thermocouple is divided into an upper thermocouple and a lower thermocouple, the upper thermocouple is inserted into the tube body of the reaction tube from the upper end of the reaction tube downwards, and the lower thermocouple is inserted into the tube body of the reaction tube from the lower end of the reaction tube upwards.
2. The acetylene hydrochlorination catalytic reaction single-tube side-line test device according to claim 1, which is characterized in that: the inside of the lower end of the reaction tube is provided with a pattern plate densely distributed with through holes.
3. The acetylene hydrochlorination catalytic reaction single-tube side-line test device according to claim 2, which is characterized in that: the pattern plate is a carbon steel plate with the diameter of 150mm, and 300 holes with the diameter of 3.5mm are densely distributed on the surface of the carbon steel plate.
4. The acetylene hydrochlorination catalytic reaction single-tube side-line test device according to claim 1, which is characterized in that: three temperature measuring electrodes are arranged on the upper thermocouple at equal intervals and are respectively compiled into a first temperature measuring point, a second temperature measuring point and a third temperature measuring point from top to bottom; three temperature measuring electrodes are arranged on the lower thermocouple at equal intervals and are respectively programmed into a fourth temperature measuring point, a fifth temperature measuring point and a sixth temperature measuring point from top to bottom.
5. The acetylene hydrochlorination catalytic reaction single-tube side-line test device according to claim 4, which is characterized in that: the protective sleeve is sleeved outside the upper thermocouple and the lower thermocouple integrally or respectively.
6. The acetylene hydrochlorination catalytic reaction single-tube side-line test apparatus according to any one of claims 1 to 5, wherein: the size of the jacket sleeve is phi 159mm multiplied by 6mm, L is 2896mm, and the material is carbon steel.
7. The acetylene hydrochlorination catalytic reaction single-tube side-line test device according to claim 5, which is characterized in that: the size of the reaction tube is phi 76mm multiplied by 4mm, L is 2996mm, and the material is carbon steel; the size of the protective sleeve is phi 22mm, L is 2375mm, and the material is carbon steel.
8. The acetylene hydrochlorination catalytic reaction single-tube side-line test apparatus according to any one of claims 1 to 5, wherein: 200 ceramic rings are arranged on each temperature measuring electrode of the thermocouple.
9. The acetylene hydrochlorination catalytic reaction single-tube side-line test apparatus according to any one of claims 1 to 5, wherein: the upper part of the jacket pipe is provided with an upper support, and the lower part is provided with a lower support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021335123.8U CN212663504U (en) | 2020-07-09 | 2020-07-09 | Acetylene hydrochlorination catalytic reaction single-tube side-line test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021335123.8U CN212663504U (en) | 2020-07-09 | 2020-07-09 | Acetylene hydrochlorination catalytic reaction single-tube side-line test device |
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| Publication Number | Publication Date |
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| CN212663504U true CN212663504U (en) | 2021-03-09 |
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| CN202021335123.8U Active CN212663504U (en) | 2020-07-09 | 2020-07-09 | Acetylene hydrochlorination catalytic reaction single-tube side-line test device |
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| CN (1) | CN212663504U (en) |
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