CN216079330U - Desalted water supply system of propane dehydrogenation device - Google Patents
Desalted water supply system of propane dehydrogenation device Download PDFInfo
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- CN216079330U CN216079330U CN202122270811.1U CN202122270811U CN216079330U CN 216079330 U CN216079330 U CN 216079330U CN 202122270811 U CN202122270811 U CN 202122270811U CN 216079330 U CN216079330 U CN 216079330U
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Abstract
The utility model relates to a desalted water supply system of a propane dehydrogenation device, which comprises a product gas compressor GB-2001, wherein the product gas compressor GB-2001 is provided with a plurality of desalted water injection ports, the upstream of the product gas compressor GB-2001 is provided with a desalted water injection pipeline connected with the desalted water injection ports, the desalted water supply system also comprises a boiler water injection pipeline and a heat exchanger, the heat exchanger is arranged beside the desalted water injection pipeline, the output end of the boiler water injection pipeline is connected with the downstream of the desalted water injection pipeline, the output end of the boiler water injection pipeline is connected with the input end of the heat exchanger, and the heat exchanger is connected with a circulating water pipeline which can penetrate through the heat exchanger and is used for cooling boiler water passing through the heat exchanger. The utility model utilizes the characteristic of higher feed water pressure of the existing boiler, takes the boiler water as a water source, cools the boiler water to about 33 ℃, and then injects the boiler water and desalted water into the inlet and the cylinder body of the compressor together, so as to further reduce the temperature between the compressor sections and the outlet of the product gas and slow down scaling.
Description
Technical Field
The utility model relates to the technical field of chemical production, in particular to a desalted water supply system of a propane dehydrogenation device.
Background
At present, in a water supply system of a propane dehydrogenation device, desalted water injection ports are arranged at the first section, the second section and the third section of a product gas compressor GB-2001, desalted water is injected into the inlet of the compressor and a 1-2-stage bend of a GB-2001 high-pressure cylinder to reduce the outlet temperature of the compressor, and the polymerization and scaling of unsaturated hydrocarbon in the product gas in a compressor cylinder body are reduced.
The pressure of the injected desalted water is about 0.65MPa, the GB-2001 water injection amount is limited due to the small diameter of the desalted water, the temperature reduction range is insufficient, particularly, the scaling of a compressor system is intensified due to the fact that the temperature of a two-section outlet exceeds 125 ℃ and the temperature of a three-section outlet exceeds 120 ℃ in the high-load state of a product gas compressor in high-temperature weather in summer, and accordingly the vibration of the compressor is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of the prior art and provides a desalted water supply system of a propane dehydrogenation device, which can reduce the temperature between sections and at an outlet of a product gas compressor and slow down scaling.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
the desalted water supply system of the propane dehydrogenation device comprises a product gas compressor GB-2001, wherein a plurality of desalted water injection ports are formed in the product gas compressor GB-2001, a desalted water injection pipeline connected with the desalted water injection ports is arranged on the upstream of the product gas compressor GB-2001, the desalted water supply system further comprises a boiler water injection pipeline and a heat exchanger, the heat exchanger is arranged beside the desalted water injection pipeline, the output end of the heat exchanger is connected with the downstream of the desalted water injection pipeline, the output end of the boiler water injection pipeline is connected with the input end of the heat exchanger, and a circulating water pipeline which can penetrate through the heat exchanger to be arranged and is used for cooling boiler water passing through the heat exchanger is connected to the heat exchanger.
Preferably, the boiler water injection pipeline is provided with an adjusting valve group for controlling water flow and pressure in the pipeline, two ends of the adjusting valve group are connected with a bypass, and the bypass is provided with a first valve for controlling the on-off of the bypass. The flow and the pressure of the boiler water are controlled by the adjusting valve group, so that the temperature of the boiler water is cooled to about 33 ℃ after the boiler water passes through the heat exchanger.
Preferably, a second valve and a first automatic shut-off valve which are positioned at the upstream of the regulating valve group are arranged on the boiler water injection pipeline. Set up second valve, first automatic cutout valve, be convenient for cut off the pipeline when overhauing.
Preferably, a filter for filtering the desalted water is arranged on the desalted water injection pipeline, a flow meter for detecting the flow rate of the desalted water is arranged downstream of the filter, a third valve is arranged downstream of the flow meter, and the heat exchanger is connected with the desalted water injection pipeline downstream of the third valve through a communication pipeline. The filter can remove impurities in the desalted water so as to avoid adverse effects on pipelines and a product gas compressor GB-2001.
Preferably, the desalted water injection pipe is provided with a fourth valve and a second automatic shut-off valve which are positioned at the upstream of the filter. And a fourth valve and a second automatic cut-off valve are arranged, so that the pipeline is conveniently cut off during maintenance.
In the utility model, the circulating water pipeline comprises an input pipeline, an output pipeline and a circulating pipeline connected between the input pipeline and the output pipeline, a fifth valve is arranged on the input pipeline, a sixth valve is arranged on the output pipeline, a seventh valve is arranged on the circulating pipeline, and the circulating pipeline is connected between the upstream of the fifth valve and the downstream of the sixth valve. The fifth valve, the sixth valve and the seventh valve can be adjusted according to the cooling requirement, the circulation speed of the circulating water is adjusted to be recycled, and the water source is saved.
Compared with the prior art, the utility model has the advantages that: the utility model utilizes the characteristic of higher feed water pressure of the existing boiler, takes the boiler water as a water source, cools the boiler water to about 33 ℃, and then injects the boiler water and desalted water into the inlet and the cylinder body of the compressor together, so as to further reduce the temperature between the compressor sections and the outlet of the product gas and slow down scaling.
Drawings
FIG. 1 is a system flow diagram of an embodiment of the present invention.
Detailed Description
The utility model is described in further detail below with reference to the accompanying examples.
As shown in fig. 1, the desalted water supply system of the propane dehydrogenation unit of the present embodiment includes a product gas compressor GB-2001, the product gas compressor GB-2001 has a plurality of desalted water injection ports, and a desalted water injection pipe 1 connected to the desalted water injection ports is provided upstream of the product gas compressor GB-2001.
This embodiment has still set up boiler water injection pipe 2 and heat exchanger 3, and heat exchanger 3 locates the side of desalted water injection pipe 1 and the output is connected with desalted water injection pipe 1's low reaches that boiler water injection pipe 2's output is connected with heat exchanger 3's input, is connected with on the heat exchanger 3 and can passes heat exchanger 3 and arrange and be used for carrying out the circulating water pipeline 4 that cools down with the boiler water through heat exchanger 3.
The boiler water injection pipeline 2 is provided with a regulating valve group 5 for controlling water flow and pressure in the pipeline, two ends of the regulating valve group 5 are connected with a bypass 51, and the bypass 51 is provided with a first valve 52 for controlling the on-off of the bypass. In the embodiment, the flow and the pressure of the boiler water are controlled by the adjusting valve group 5, so that the temperature of the boiler water is cooled to about 33 ℃ after the boiler water passes through the heat exchanger 3.
The boiler water injection pipe 2 is provided with a second valve 21 and a first automatic shut-off valve 22 which are positioned upstream of the regulating valve group 5. The second valve 21 and the first automatic cut-off valve 22 are arranged, so that the pipeline can be cut off conveniently during maintenance.
The desalted water injection pipe 1 is provided with a filter 11 for filtering desalted water, a flow meter 12 for detecting the flow rate of the desalted water is arranged at the downstream of the filter 11, a third valve 13 is arranged at the downstream of the flow meter 12, the heat exchanger 3 is connected with the desalted water injection pipe 1 at the downstream of the third valve 13 through a communication pipe 32, and the communication pipe 32 is provided with a valve. The filter 11 can remove impurities in the desalted water so as to avoid adverse effects on pipelines and a product gas compressor GB-2001.
The desalted water injection pipe 1 is provided with a fourth valve 14 and a second automatic shut-off valve 15 upstream of the filter 11. The fourth valve 14 and the second automatic cut-off valve 15 are arranged, so that the pipeline can be cut off conveniently during maintenance.
In this embodiment, the circulating water pipeline 4 includes an input pipeline 41, an output pipeline 42 and a circulating pipeline 43 connected between the input pipeline 41 and the output pipeline 42, a fifth valve 411 is disposed on the input pipeline 41, a sixth valve 421 is disposed on the output pipeline 42, a seventh valve 431 is disposed on the circulating pipeline 43, and the circulating pipeline 43 is connected between the upstream of the fifth valve 411 and the downstream of the sixth valve 421. The fifth valve, the sixth valve and the seventh valve can be adjusted according to the cooling requirement, the circulation speed of the circulating water is adjusted to be recycled, and the water source is saved.
The embodiment utilizes the characteristic that the existing boiler has higher feed water pressure, takes boiler water as a water source, cools the boiler water to about 33 ℃, and then injects the boiler water and desalted water into the inlet and the cylinder body of the compressor together to further reduce the temperature of the product gas compressor section and the outlet, and the embodiment can reduce the temperature of the outlet of the compressor to below 115 ℃, reduce the coking tendency and improve the operation condition of the compressor.
Claims (6)
1. The utility model provides a propane dehydrogenation device's demineralized water feed system, includes the product gas compressor, the product gas compressor is last to have a plurality of demineralized water injection ports, the upstream of product gas compressor is provided with the demineralized water injection pipeline (1) that is connected with the demineralized water injection port, its characterized in that: still include boiler water injection pipe way (2) and heat exchanger (3), the side and the output that desalted water injection pipe way (1) was located in heat exchanger (3) are connected with the low reaches of desalted water injection pipe way (1), the output of boiler water injection pipe way (2) is connected with the input of heat exchanger (3), be connected with on heat exchanger (3) and pass heat exchanger (3) and arrange and be used for carrying out circulating water pipeline (4) that cool down with the boiler water through heat exchanger (3).
2. The desalted water supply system of propane dehydrogenation unit as claimed in claim 1, wherein: the boiler water injection pipeline (2) is provided with an adjusting valve group (5) used for controlling water flow and pressure in the pipeline, two ends of the adjusting valve group (5) are connected with a bypass (51), and a first valve (52) used for controlling the on-off of the bypass is arranged on the bypass (51).
3. The desalted water supply system of propane dehydrogenation unit as claimed in claim 2, wherein: and a second valve (21) and a first automatic shut-off valve (22) which are positioned at the upstream of the regulating valve group (5) are arranged on the boiler water injection pipeline (2).
4. The desalted water supply system of propane dehydrogenation unit as claimed in claim 1, 2 or 3, wherein: the desalinated water injection pipeline (1) is provided with a filter (11) for filtering desalinated water, a flow meter (12) for detecting the flow rate of the desalinated water is arranged on the downstream of the filter (11), a third valve (13) is arranged on the downstream of the flow meter (12), and the heat exchanger (3) is connected with the desalinated water injection pipeline (1) on the downstream of the third valve (13) through a communication pipeline (32).
5. The desalted water supply system of propane dehydrogenation unit as claimed in claim 4, wherein: and a fourth valve (14) and a second automatic cut-off valve (15) which are positioned at the upstream of the filter (11) are arranged on the desalted water injection pipeline (1).
6. The desalted water supply system of propane dehydrogenation unit as claimed in claim 1, 2 or 3, wherein: circulating water pipeline (4) include input pipeline (41), output pipeline (42) and connect in circulating line (43) between input pipeline (41) and output pipeline (42), be provided with fifth valve (411) on input pipeline (41), be provided with sixth valve (421) on output pipeline (42), be provided with seventh valve (431) on circulating line (43), circulating line (43) are connected between fifth valve (411) upper reaches and sixth valve (421) low reaches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122270811.1U CN216079330U (en) | 2021-09-16 | 2021-09-16 | Desalted water supply system of propane dehydrogenation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122270811.1U CN216079330U (en) | 2021-09-16 | 2021-09-16 | Desalted water supply system of propane dehydrogenation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216079330U true CN216079330U (en) | 2022-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122270811.1U Active CN216079330U (en) | 2021-09-16 | 2021-09-16 | Desalted water supply system of propane dehydrogenation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216079330U (en) |
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2021
- 2021-09-16 CN CN202122270811.1U patent/CN216079330U/en active Active
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