Dry gas seal temperature control device of naphthenic oil hydrogenation system
By connecting the electric heater in series on the sealed gas inlet pipeline of the cycloalkyl oil hydrogenation system, the problem of unstable sealed gas temperature control in the traditional dry air sealing system is solved, the stability and reliability of the sealing system are improved, and maintenance costs are reduced.
Patent Information
- Application Number
- CN202421775042.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-25
AI Technical Summary
When the ambient temperature changes and compressor operating conditions fluctuate, the temperature control of the sealing gas is difficult to stabilize, resulting in unstable sealing effect and even leakage, affecting the normal operation and production efficiency of the equipment.
The electric heater is connected in series on the sealed gas inlet line to ensure that the sealed gas reaches the set temperature before entering the distribution plate and provides an additional gas flow path through the high-pressure gate valve and sub-branch for system adjustment or as a backup path during electrical heater maintenance.
Effectively and stably control the temperature of the sealing gas, reduce the impact of ambient temperature changes on the sealing effect, improve the stability and reliability of the system, and reduce maintenance costs.
Smart Images
Figure CN222914111U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of naphthenic oil hydrogenation equipment, and particularly relates to a dry gas seal temperature control device for a naphthenic oil hydrogenation system. Background Art
[0002] In the petrochemical field, a naphthenic oil hydrogenation system is a set of production facilities dedicated to processing naphthenic oil. Naphthenic oil is a petroleum product containing naphthenes, which has a wide range of industrial applications, such as being used as the base oil of lubricating oil and as a solvent in certain chemical reactions.
[0003] The naphthenic oil hydrogenation system removes impurities such as sulfur and nitrogen in the oil through hydrogenation reactions to improve the quality of the oil. The naphthenic oil hydrogenation system includes a recycle hydrogen compressor and a dry gas seal system. The recycle hydrogen compressor is used to compress recycle hydrogen to ensure the continuity and efficiency of the hydrogenation reaction. The dry gas seal system is used for sealing equipment such as compressors to prevent gas leakage and ensure the safety and efficiency of equipment operation.
[0004] Traditional dry gas seal systems rely on the control of the temperature and pressure of the seal gas to achieve the sealing effect. However, due to the change of ambient temperature and the fluctuation of compressor operating conditions, the temperature control of the seal gas is often difficult to be stable, resulting in unstable sealing effect and even leakage, which affects the normal operation and production efficiency of the equipment. Summary of the Utility Model
[0005] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a dry gas seal temperature control device for a naphthenic oil hydrogenation system that improves the stability and reliability of the seal system.
[0006] The technical solution adopted to solve the above technical problem is: a dry gas seal temperature control device for a naphthenic oil hydrogenation system, including a recycle hydrogen compressor and a seal gas distribution plate. A seal gas inlet pipe is connected to the recycle hydrogen output pipe of the recycle hydrogen compressor. The seal gas inlet pipe is connected to the inlet of the seal gas distribution plate. The outlet of the seal gas distribution plate is connected to the seal gas inlet of the recycle hydrogen compressor through a seal gas outlet pipe. An electric heater is connected in series on the seal gas inlet pipe.
[0007] As a preferred technical solution, a first high-pressure gate valve and a second high-pressure gate valve are connected in series on both sides of the electric heater on the seal gas inlet pipe.
[0008] As a preferred technical solution, the number of the first high-pressure gate valves is 2, and the 2 first high-pressure gate valves are connected in series on the seal gas inlet pipe.
[0009] As a preferred technical solution, the number of the second high-pressure gate valves is 2, and the 2 second high-pressure gate valves are connected in series on the pipeline at the outlet of the electric heater at the sealing gas inlet.
[0010] As a preferred technical solution, a sub-branch pipe parallel to the electric heater is connected to the sealing gas inlet pipeline, and a third high-pressure gate valve is connected in series on the sub-branch pipe.
[0011] As a preferred technical solution, the number of the third high-pressure gate valves is 2.
[0012] The beneficial effects of the present utility model are as follows:
[0013] By connecting an electric heater in series on the sealing gas inlet pipeline, the present utility model can effectively and stably control the temperature of the sealing gas, reduce the influence of environmental temperature changes on the sealing effect, improve the stability and reliability of the system, and reduce the maintenance cost. Description of the Drawings
[0014] Figure 1 is a schematic structural diagram of the present utility model.
[0015] Wherein: recycle hydrogen compressor 1, sealing gas inlet pipeline 2, third high-pressure gate valve 3, sub-branch pipe 4, first high-pressure gate valve 5, electric heater 6, second high-pressure gate valve 7, sealing gas distribution plate 8, sealing gas outlet pipeline 9. Detailed Embodiments
[0016] The present utility model will be further described in detail below with reference to the drawings and embodiments, but the present utility model is not limited to the following embodiments.
[0017] In Figure 1 the dry gas seal temperature control device of the naphthenic oil hydrogenation system of this embodiment includes a recycle hydrogen compressor 1, a sealing gas distribution plate 8. A sealing gas inlet pipeline 2 is connected to the recycle hydrogen output pipeline of the recycle hydrogen compressor 1, and the sealing gas inlet pipeline 2 is connected to the air inlet of the sealing gas distribution plate 8. In this embodiment, hydrogen is used as the sealing gas. An electric heater 6 is connected in series on the sealing gas inlet pipeline 2 to ensure that the sealing gas reaches the set temperature before entering the distribution plate. The air outlet of the sealing gas distribution plate 8 is connected to the sealing gas inlet of the recycle hydrogen compressor 1 through a sealing gas outlet pipeline 9.
[0018] Two first high-pressure gate valves 5 and two second high-pressure gate valves 7 are respectively connected in series on both sides of the electric heater 6 on the sealing gas inlet pipeline 2. A sub-branch pipe 4 parallel to the electric heater 6 is connected to the sealing gas inlet pipeline 2, and two third high-pressure gate valves 3 are connected in series on the sub-branch pipe 4.
[0019] The working principle of the present utility model is as follows:
[0020] The seal gas (hydrogen gas) diverted from the circulating hydrogen output pipeline is transported through the seal gas inlet pipeline 2 to the seal gas distribution disc 8. The seal gas is heated when passing through the electric heater 6 to reach the set temperature (such as 70 °C). The heated seal gas enters the seal gas distribution disc 8 and is evenly distributed to each seal point of the compressor through the seal gas outlet pipeline 9 of the distribution disc. By closing the first high-pressure gate valve 5 and the second high-pressure gate valve 7 and opening the auxiliary branch pipe 4 and the third high-pressure gate valve 3, an additional gas flow path is provided for system regulation or as a standby path when the electric heater 6 is under maintenance.
Claims
1. A dry gas sealing temperature control device for a naphthenic oil hydrogenation system, comprising a circulating hydrogen compressor and a sealing gas distribution plate, characterized in that: A sealing gas inlet pipe is connected to the circulating hydrogen output pipe of the circulating hydrogen compressor, and the sealing gas inlet pipe is connected to the air inlet of the sealing gas distribution plate. The air outlet of the sealing gas distribution plate is connected to the sealing gas inlet of the circulating hydrogen compressor through the sealing gas outlet pipe, and an electric heater is connected in series on the sealing gas inlet pipe.
2. The dry gas seal temperature control device of the naphthenic oil hydrogenation system according to claim 1, characterized in that: A first high-pressure gate valve and a second high-pressure gate valve are connected in series on both sides of the electric heater on the sealing gas inlet pipeline.
3. The dry gas seal temperature control device of the naphthenic oil hydrogenation system according to claim 2, characterized in that: The number of the first high-pressure gate valves is two, and the two first high-pressure gate valves are connected in series to the sealing gas inlet pipeline.
4. The dry gas seal temperature control device of the naphthenic oil hydrogenation system according to claim 2, characterized in that: The number of the second high-pressure gate valves is 2, and the two second high-pressure gate valves are connected in series to the outlet pipe of the electric heater.
5. The dry gas seal temperature control device of the naphthenic oil hydrogenation system according to claim 1, characterized in that: The sealing gas inlet pipeline is connected with a secondary branch pipe connected in parallel with the electric heater, and the secondary branch pipe is connected in series with a third high-pressure gate valve.
6. The dry gas seal temperature control device of the naphthenic oil hydrogenation system according to claim 5, characterized in that: The number of the third high-pressure gate valves is 2.