CN215522890U - Steam purge surge tank for PDH reactor - Google Patents
Steam purge surge tank for PDH reactor Download PDFInfo
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- CN215522890U CN215522890U CN202122037775.4U CN202122037775U CN215522890U CN 215522890 U CN215522890 U CN 215522890U CN 202122037775 U CN202122037775 U CN 202122037775U CN 215522890 U CN215522890 U CN 215522890U
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Abstract
The utility model discloses a steam purging buffer tank for a PDH reactor, which comprises a high-pressure steam input pipe, a buffer tank, a gas transmission pipe and a reactor, wherein the high-pressure steam input pipe is connected with the buffer tank; one end of the high-pressure steam input pipe is connected with the high-pressure steam main pipe, and the other end of the high-pressure steam input pipe is connected with the buffer tank; one end of the gas pipe is connected with the buffer tank, and the other end of the gas pipe is connected with the reactor; a first monitoring pipeline is connected between the buffer tank and the high-pressure steam input pipe, and is provided with a first pressure controller and a first flow controller; the gas transmission pipe is provided with a second monitoring pipeline, and the second monitoring pipeline is provided with a second pressure controller. The pressure of high-pressure steam entering the buffer tank is controlled by means of the first detection pipeline, so that the buffer effect is realized; compared with the traditional mode of directly connecting the high-pressure steam input pipe into the reactor, the high-pressure steam input pipe can be buffered and controlled to a preset pressure value, the impact of high pressure on the pipeline and the reactor is reduced, the loss of the pipeline and the reactor is reduced, and therefore the pipeline and the reactor are more reliably used.
Description
Technical Field
The utility model relates to the technical field of chemical production equipment, in particular to a steam purging buffer tank for a PDH reactor.
Background
The steam purging of the PDH reactor aims to purge hydrocarbons inside the reactor to a downstream hydrocarbon system so as to create conditions for the next step of air regeneration of the catalyst; the steam used by the existing reactor steam purging is divided into a branch from a high-pressure steam main pipe and directly sent to a reactor, and when the reactor needs steam purging, the steam is introduced into the reactor by opening a steam purging valve to purge the materials in the reactor in a specified time period; and directly open high-pressure steam main's switch, high-pressure steam can get into in the twinkling of an eye, and produced high pressure can strike pipe network and reactor, leads to pipe network and reactor to appear undulant, and can lose pipe network and various devices.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a steam purging buffer tank for a PDH reactor, which can effectively solve the problem of fluctuation of a pipe network and a reactor due to high pressure impact, reduce the loss of the pipe network and the reactor, and improve the reliability of the pipe network and the reactor.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a steam purging buffer tank for a PDH reactor comprises a high-pressure steam input pipe, a buffer tank, a gas transmission pipe and a reactor;
one end of the high-pressure steam input pipe is connected with the high-pressure steam main pipe, and the other end of the high-pressure steam input pipe is connected with the buffer tank; one end of the gas pipe is connected with the buffer tank, and the other end of the gas pipe is connected with the reactor;
a first monitoring pipeline is connected between the buffer tank and the high-pressure steam input pipe, and is provided with a first pressure controller and a first flow controller; the gas transmission pipe is provided with a second monitoring pipeline, and the second monitoring pipeline is provided with a second pressure controller.
As a preferred embodiment: the first monitoring pipeline is connected with one end of the buffer tank and is a first connecting end, the first monitoring pipeline is connected with one end of the high-pressure steam input pipe and is a second connecting end, and the first pressure controller and the first flow controller are arranged at intervals from the first connecting end to the second connecting end in sequence.
As a preferred embodiment: the one end that the high pressure steam input tube connects the buffer tank is the third link, the high pressure steam input tube is provided with first governing valve between third link and second link.
As a preferred embodiment: the second monitoring pipeline is connected in series on the gas conveying pipe to form a fourth connecting end and a fifth connecting end, the fourth connecting end and the fifth connecting end are arranged at an interval, and the fourth connecting end or the fifth connecting end is provided with a second regulating valve.
As a preferred embodiment: and a liquid level meter is arranged at the position, close to the lower part, of the middle part of the buffer tank.
As a preferred embodiment: the bottom of buffer tank is provided with the drain pipe, the drain pipe is provided with drain valve and steam trap.
As a preferred embodiment: the buffer tank is further connected with a medium-pressure steam input pipe, and the medium-pressure steam input pipe is provided with a third regulating valve.
Compared with the prior art, the utility model has obvious advantages and beneficial effects, and specifically, the technical scheme includes that: the high-pressure steam input pipe is connected with the buffer tank so as to input high-pressure steam into the buffer tank, and the pressure of the high-pressure steam entering the buffer tank is controlled by means of the first detection pipeline, so that the buffer effect is realized; compared with the traditional mode of directly connecting the high-pressure steam input pipe into the reactor, the high-pressure steam input pipe can be buffered and controlled to a preset pressure value, so that the impact of high pressure on the pipeline and the reactor is reduced, the loss of the pipeline and the reactor is reduced, and the use of the pipeline and the reactor is more reliable;
secondly, a second monitoring pipeline is arranged on the gas transmission pipe, so that double-path monitoring can be realized; not only can monitor the high pressure between high pressure steam input pipe and the buffer tank, also can monitor the high pressure of gas-supply pipe for the management and control of high pressure is more perfect.
To more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention.
The attached drawings indicate the following:
10. high-pressure steam input pipe 11 and first regulating valve
20. Buffer tank 21 and liquid level meter
221. Drain valve 222 and steam trap
30. Gas transmission pipe 40 and reactor
50. First monitoring pipeline 51 and first pressure controller
52. First flow controller 60, second monitoring line
61. Second pressure controller 62, second regulator valve
70. A medium pressure steam input pipe 71 and a third regulating valve.
Detailed Description
Referring to fig. 1, a steam purge buffer tank for a PDH reactor according to a preferred embodiment of the present invention is shown, which includes a high pressure steam input pipe 10, a buffer tank 20, a gas pipe 30 and a reactor 40.
One end of the high-pressure steam input pipe 10 is connected with a high-pressure steam main pipe (not shown in the figure), and the other end is connected with a buffer tank 20; one end of the gas transmission pipe 30 is connected with the buffer tank 20, and the other end is connected with the reactor 40; in the embodiment of the present application, a first monitoring pipeline 50 is connected between the buffer tank 20 and the high-pressure steam input pipe 10, and the first monitoring pipeline 50 is provided with a first pressure controller 51 and a first flow controller 52; the gas pipe 30 is provided with a second monitoring line 60, and the second monitoring line 60 is provided with a second pressure controller 61.
Specifically, one end of the first monitoring pipeline 50 connected to the buffer tank 20 is a first connection end, one end of the first monitoring pipeline 50 connected to the high-pressure steam input pipe 10 is a second connection end, and the first pressure controller 51 and the first flow controller 52 are sequentially arranged from the first connection end to the second connection end at intervals. If the pressure of the high-pressure steam inside the buffer tank 20 is too high, the first pressure controller 51 and the first flow controller 52 can control the pressure of the high-pressure steam inside the buffer tank 20 to flow back to the high-pressure steam input pipe to realize the pressure relief function.
Furthermore, the end of the high-pressure steam input pipe 10 connected with the buffer tank 20 is a third connection end, and a first regulating valve 11 is arranged between the third connection end and the second connection end of the high-pressure steam input pipe 10. The first regulating valve 11 is a switch for conducting the high-pressure steam input pipe 10 and the buffer tank 20, if high-pressure steam is discharged into the buffer tank 20, the first regulating valve 11 is firstly opened slowly, the pressure of the buffer tank 20 is gradually increased, then the air pressure inside the buffer tank 20 is controlled by using the first monitoring pipeline 50, and after the air pressure value inside the buffer tank 20 meets a preset value, the air pressure value enters the reactor 40 through the air conveying pipe 30 for purging operation.
A liquid level meter 21 is arranged at the lower position of the middle part of the buffer tank 20, a drain pipe 22 is arranged at the bottom of the buffer tank 20, and a drain valve 221 and a steam trap 222 are arranged on the drain pipe 22; the liquid level meter 21 can monitor the water level of the condensed water in the buffer tank 20, and if the water level in the buffer tank 20 is too high, the condensed water in the buffer tank 20 can be discharged by opening the drain valve 221 and the steam trap 222.
The second monitoring pipeline 60 is serially connected to the gas pipe 30 to form a fourth connecting end and a fifth connecting end, the fourth connecting end and the fifth connecting end are arranged at an interval, and the fourth connecting end or the fifth connecting end is provided with a second regulating valve 62.
The buffer tank 20 is further connected with a medium pressure steam input pipe 70, the medium pressure steam input pipe 70 is provided with a third regulating valve 71, and when the third regulating valve 71 is opened, the steam pressure of the medium pressure steam input pipe 70 can be input into the buffer tank 20.
The design of the utility model is characterized in that: the high-pressure steam input pipe is connected with the buffer tank so as to input high-pressure steam into the buffer tank, and the pressure of the high-pressure steam entering the buffer tank is controlled by means of the first detection pipeline, so that the buffer effect is realized; compared with the traditional mode of directly connecting the high-pressure steam input pipe into the reactor, the high-pressure steam input pipe can be buffered and controlled to a preset pressure value, so that the impact of high pressure on the pipeline and the reactor is reduced, the loss of the pipeline and the reactor is reduced, and the use of the pipeline and the reactor is more reliable;
secondly, a second monitoring pipeline is arranged on the gas transmission pipe, so that double-path monitoring can be realized; not only can monitor the high pressure between high pressure steam input pipe and the buffer tank, also can monitor the high pressure of gas-supply pipe for the management and control of high pressure is more perfect.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the technical scope of the present invention.
Claims (7)
1. A steam purge surge tank for a PDH reactor, characterized by: comprises a high-pressure steam input pipe, a buffer tank, a gas transmission pipe and a reactor;
one end of the high-pressure steam input pipe is connected with the high-pressure steam main pipe, and the other end of the high-pressure steam input pipe is connected with the buffer tank; one end of the gas pipe is connected with the buffer tank, and the other end of the gas pipe is connected with the reactor;
a first monitoring pipeline is connected between the buffer tank and the high-pressure steam input pipe, and is provided with a first pressure controller and a first flow controller; the gas transmission pipe is provided with a second monitoring pipeline, and the second monitoring pipeline is provided with a second pressure controller.
2. A steam purge surge tank for a PDH reactor as defined in claim 1, wherein: the first monitoring pipeline is connected with one end of the buffer tank and is a first connecting end, the first monitoring pipeline is connected with one end of the high-pressure steam input pipe and is a second connecting end, and the first pressure controller and the first flow controller are arranged at intervals from the first connecting end to the second connecting end in sequence.
3. A steam purge surge tank for a PDH reactor as defined in claim 2, wherein: the one end that the high pressure steam input tube connects the buffer tank is the third link, the high pressure steam input tube is provided with first governing valve between third link and second link.
4. A steam purge surge tank for a PDH reactor as defined in claim 1, wherein: the second monitoring pipeline is connected in series on the gas conveying pipe to form a fourth connecting end and a fifth connecting end, the fourth connecting end and the fifth connecting end are arranged at an interval, and the fourth connecting end or the fifth connecting end is provided with a second regulating valve.
5. A steam purge surge tank for a PDH reactor as defined in claim 1, wherein: and a liquid level meter is arranged at the position, close to the lower part, of the middle part of the buffer tank.
6. A steam purge surge tank for a PDH reactor as defined in claim 1, wherein: the bottom of buffer tank is provided with the drain pipe, the drain pipe is provided with drain valve and steam trap.
7. A steam purge surge tank for a PDH reactor as defined in claim 1, wherein: the buffer tank is further connected with a medium-pressure steam input pipe, and the medium-pressure steam input pipe is provided with a third regulating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122037775.4U CN215522890U (en) | 2021-08-27 | 2021-08-27 | Steam purge surge tank for PDH reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122037775.4U CN215522890U (en) | 2021-08-27 | 2021-08-27 | Steam purge surge tank for PDH reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215522890U true CN215522890U (en) | 2022-01-14 |
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ID=79794011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122037775.4U Active CN215522890U (en) | 2021-08-27 | 2021-08-27 | Steam purge surge tank for PDH reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215522890U (en) |
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2021
- 2021-08-27 CN CN202122037775.4U patent/CN215522890U/en active Active
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