CN219415864U - Propane dehydrogenation oil gas heat transfer device - Google Patents

Abstract

The utility model discloses a propane dehydrogenation oil gas heat exchange device, which comprises a first heat exchange box, wherein the upper side of the first heat exchange box is connected with a second heat exchange box, the upper side of the second heat exchange box is connected with a third heat exchange box, an input pipe is arranged on the first heat exchange box, a plurality of shunt pipes are arranged on the input pipe, a first-stage heating mechanism is arranged in the first heat exchange box above the shunt pipes, a second-stage heating mechanism is arranged in the second heat exchange box, and the second-stage heating mechanism comprises: the bottom of the three-stage heating pipe is connected with the top of the spiral pipe through a pipeline, the annular heater is arranged on the outer side of the third heat exchange box, and the output pipe extending out of the third heat exchange box is arranged on the top end of the three-stage heating pipe. The utility model gradually heats the propane gas in three stages, has higher heating speed and higher heat absorption rate, and reduces energy consumption.

Description

Propane dehydrogenation oil gas heat transfer device

Technical Field

The utility model relates to the technical field of propane dehydrogenation, in particular to a propane dehydrogenation oil gas heat exchange device.

Background

Propane dehydrogenation, which refers to the dehydrogenation of propane from propane to produce propylene monomers, is an important way to produce propylene.

In the production of propylene by dehydrogenation of propane, it is necessary to heat propane gas to 600 ℃. The existing heat exchange device of propane dehydrogenation equipment heats propane gas to 600 ℃ at one time, but in the process of one-time heating, the heating speed is slower and slower along with the increasing of the temperature, so that longer heating time is required, more heat is emitted to the surrounding environment to cause heat loss, and therefore, aiming at the current situation, the development of the propane dehydrogenation oil-gas heat exchange device which gradually heats propane gas in three stages, has higher heating speed and higher heat absorptivity and reduces energy consumption is urgently needed, so that the defects in the current practical application are overcome, and the current requirements are met.

Disclosure of Invention

The utility model aims to provide a propane dehydrogenation oil gas heat exchange device so as to solve the problems in the background art.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a propane dehydrogenation oil gas heat transfer device, includes first heat exchange box, second heat exchange box, third heat exchange box, ring heater, input tube, one-level heating mechanism, second grade heating mechanism and tertiary heating pipe, the upside of first heat exchange box is connected with the second heat exchange box, the upside of second heat exchange box is connected with the third heat exchange box, install the input tube on the first heat exchange box, be provided with a plurality of shunt tubes on the input tube, the one-level heating mechanism is installed in first heat exchange box to the top of shunt tube, install second grade heating mechanism in the second heat exchange box, second grade heating mechanism includes: the heating device comprises a spiral pipe, an electric heating rod, an air inlet pipe and an adapter plate, wherein the air inlet pipe is arranged at the bottom of the spiral pipe, the air inlet pipe extends into a first heat exchange box, the electric heating rod is arranged at the inner side of the spiral pipe and fixed with the inner wall of a second heat exchange box through the adapter plate, a third-stage heating pipe is arranged in a third heat exchange box, the bottom of the third-stage heating pipe is connected with the top of the spiral pipe through a pipeline, an annular heater is arranged at the outer side of the third heat exchange box, and an output pipe extending out of the third heat exchange box is arranged at the top end of the third-stage heating pipe.

Preferably: the inner diameter of the shunt tube is one third of the inner diameter of the input tube.

Preferably: the primary heating mechanism includes: the box body is fixed in the first heat exchange box, a plurality of vent holes are formed in the upper end and the lower end of the box body, and a plurality of electric heating plates are installed in the box body.

Preferably: the three-stage heating pipe is formed by splicing a plurality of U-shaped pipes.

Preferably: the spiral tube and the three-stage heating tube are both made of copper.

The beneficial effects of the utility model are as follows: when the propane dehydrogenation oil gas heat exchange device is used, external propane gas is introduced into the first heat exchange box from the input pipe, the propane gas in the input pipe is conveniently and rapidly dispersed into the first heat exchange box through the plurality of split pipes, then, the propane gas discharged from the split pipes is rapidly dispersed into the box body from the plurality of vent holes at the bottom of the box body, the propane gas is further heated through the plurality of electric heating plates in the box body, the propane gas is further rapidly heated, then, the propane gas flowing out of the box body enters the spiral pipe through the air inlet pipe, the spiral pipe is heated through the electric heating rod, the propane gas flowing in the spiral pipe is further heated again, then, the spiral pipe conveys the propane gas into the third heat exchange box, the whole third heat exchange box is heated through the annular heater, the propane gas in the third heat exchange box is absorbed by the propane gas, and finally, the propane gas is discharged from the output pipe for subsequent reaction. In conclusion, the utility model gradually heats the propane gas in three stages, so that the temperature rising speed is higher, the heat absorption rate is higher, and the energy consumption is reduced.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a schematic diagram of the internal structure of the present utility model.

Fig. 3 is a partial view of fig. 2 in accordance with the present utility model.

Fig. 4 is a schematic diagram of a portion of the structure of the present utility model.

Fig. 5 is a schematic diagram of a portion of the structure of the present utility model.

Fig. 6 is an interior view of fig. 5 in accordance with the present utility model.

Legend description:

1. a first heat exchange tank; 2. a second heat exchange tank; 3. a third heat exchange tank; 4. an annular heater; 5. an input tube; 501. a shunt; 6. a primary heating mechanism; 601. a case; 602. a vent hole; 603. an electric heating plate; 7. a secondary heating mechanism; 701. a spiral tube; 702. an electric heating rod; 703. an air inlet pipe; 704. an adapter plate; 8. a third-stage heating pipe; 801. and outputting the pipe.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Specific examples are given below.

Referring to fig. 1 to 6, in the embodiment of the present utility model, a propane dehydrogenation oil gas heat exchange device includes a first heat exchange box 1, a second heat exchange box 2, a third heat exchange box 3, an annular heater 4, an input pipe 5, a first-stage heating mechanism 6, a second-stage heating mechanism 7 and a third-stage heating pipe 8, the upper side of the first heat exchange box 1 is connected with the second heat exchange box 2, the upper side of the second heat exchange box 2 is connected with the third heat exchange box 3, the first heat exchange box 1 is provided with the input pipe 5, a port of the input pipe 5 is connected with an external propane gas source, the input pipe 5 is provided with a plurality of shunt pipes 501, the inner diameter of the shunt pipes 501 is one third of the inner diameter of the input pipe 5, the propane gas in the input pipe 5 is conveniently and rapidly dispersed into the first heat exchange box 1 through the plurality of shunt pipes 501, the first-stage heating mechanism 6 is installed in the first heat exchange box 1 above the shunt pipes 501, and the first-stage heating mechanism 6 includes: the box 601, air vent 602 and electrical heating piece 603, the box 601 is fixed in first heat exchange box 1, the upper and lower both ends of box 601 all are provided with a plurality of air vents 602, install a plurality of electrical heating pieces 603 in the box 601, shunt tubes 501 exhaust propane gas is quick to disperse in the box 601 from a plurality of air vents 602 of box 601 bottom, heat propane gas through a plurality of electrical heating pieces 603 in the box 601, then, the air is discharged from the air vent 602 at box 601 top, install second grade heating mechanism 7 in the second heat exchange box 2, second grade heating mechanism 7 includes: the electric heating device comprises a spiral tube 701, an electric heating rod 702, an air inlet tube 703 and an adapter plate 704, wherein the air inlet tube 703 is arranged at the bottom of the spiral tube 701, the electric heating rod 702 is arranged at the inner side of the spiral tube 701 and is fixed with the inner wall of a second heat exchange box 2 through the adapter plate 704, propane gas flowing out of the box body 601 enters the spiral tube 701 through the air inlet tube 703, the spiral tube 701 is heated through the electric heating rod 702, propane gas flowing in the spiral tube 701 is further heated again, a three-stage heating tube 8 is arranged in the third heat exchange box 3, the three-stage heating tube 8 is formed by splicing a plurality of U-shaped tubes, the circulation time of the propane gas in the three-stage heating tube 8 is prolonged, the bottom of the three-stage heating tube 8 is connected with the top of the spiral tube 701 through a pipeline, an annular heater 4 is arranged at the outer side of the third heat exchange box 3, an output tube 801 extending out of the third heat exchange box 3 is arranged at the top of the three-stage heating tube 8, the whole third heat exchange box 3 is heated through the annular heater 4, the propane gas in the three-stage heating tube 8 is heated, finally the output tube 801 is discharged from the output tube 801, and the propane gas is further discharged out of the annular heater 4, and the copper is reacted to form the spiral tube 8, and the three-stage heating tube has good heat conductivity.

Working principle: when the propane dehydrogenation oil gas heat exchange device is used, external propane gas is introduced into the first heat exchange box 1 from the input pipe 5, the propane gas in the input pipe 5 is conveniently and rapidly dispersed into the first heat exchange box 1 through the plurality of shunt pipes 501, then, the propane gas discharged by the shunt pipes 501 is rapidly dispersed into the box 601 from the plurality of vent holes 602 at the bottom of the box 601, the propane gas is heated through the plurality of electric heating plates 603 in the box 601, the propane gas is further rapidly heated, then, the propane gas flowing out of the box 601 enters the spiral pipe 701 through the air inlet pipe 703, the spiral pipe 701 is heated through the electric heating rod 702, the propane gas flowing in the spiral pipe 701 is further heated again, then, the spiral pipe 701 conveys the propane gas into the three-stage heating pipe 8, the whole third heat exchange box 3 is heated through the annular heater 4, the propane gas in the three-stage heating pipe 8 absorbs heat in the third heat exchange box 3, finally, the propane gas is discharged from the output pipe 801, and the subsequent reaction is used.

The present utility model is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present utility model and the inventive concept thereof, can be replaced or changed within the scope of the present utility model.

Claims (5)

1. The utility model provides a propane dehydrogenation oil gas heat transfer device, its characterized in that, including first heat exchange box (1), second heat exchange box (2), third heat exchange box (3), ring heater (4), input tube (5), one-level heating mechanism (6), second grade heating mechanism (7) and tertiary heating pipe (8), the upside of first heat exchange box (1) is connected with second heat exchange box (2), the upside of second heat exchange box (2) is connected with third heat exchange box (3), install input tube (5) on first heat exchange box (1), be provided with a plurality of shunt tubes (501) on input tube (5), install one-level heating mechanism (6) in first heat exchange box (1) above shunt tubes (501), install second grade heating mechanism (7) in second heat exchange box (2), second grade heating mechanism (7) include: spiral pipe (701), electric heat stick (702), intake pipe (703) and keysets (704), the bottom of spiral pipe (701) is provided with intake pipe (703), intake pipe (703) extend to in first heat exchange box (1), electric heat stick (702) are installed to the inboard of spiral pipe (701), electric heat stick (702) are fixed with the inner wall of second heat exchange box (2) through keysets (704), install tertiary heating pipe (8) in third heat exchange box (3), the bottom of tertiary heating pipe (8) links to each other with the top of spiral pipe (701) through the pipeline, annular heater (4) are installed in the outside of third heat exchange box (3), output tube (801) that extend to outside third heat exchange box (3) are installed on the top of tertiary heating pipe (8).

2. The propane dehydrogenation oil gas heat exchange device according to claim 1, characterized in that the inner diameter of the shunt tube (501) is one third of the inner diameter of the input tube (5).

3. Propane dehydrogenation oil gas heat exchange device according to claim 1, characterized in that the primary heating means (6) comprise: the box body (601), air holes (602) and electrical heating plates (603), the box body (601) is fixed in the first heat exchange box (1), a plurality of air holes (602) are formed in the upper end and the lower end of the box body (601), and a plurality of electrical heating plates (603) are arranged in the box body (601).

4. The propane dehydrogenation oil gas heat exchange device according to claim 1, wherein the three-stage heating pipe (8) is formed by splicing a plurality of U-shaped pipes.

5. The propane dehydrogenation oil gas heat exchange device according to claim 1, wherein the spiral tube (701) and the tertiary heating tube (8) are both made of copper.