Novel silica gel regeneration system

Abstract

The utility model discloses a novel silica gel regeneration system which comprises a recycle gas separator, one end of the recycle gas separator is respectively connected with a first ammonia cooler and a second ammonia cooler through a three-way pipe, one end of the first ammonia cooler far away from the recycle gas separator is connected with a first water separator, and the other end of the first ammonia cooler far away from the recycle gas separator is connected with a second water separator. One end, far away from the circulating gas separator, of the second ammonia cooler is connected with a second water separator; a first conveying pipe is mounted at the upper end of the first water separator; compared with the prior art, double paths are arranged from the circulating gas separator to the first ammonia cooler or the second ammonia cooler, and then the circulating gas enters the first water separator or the second water separator from the first ammonia cooler or the second ammonia cooler; then, the water enters the first silica gel regenerator or the second silica gel regenerator through the electric heater from the first water separator or the second water separator, and finally flows into the turbine motor terminal through the turbine motor terminal flow pipe, so that a double-path silica gel regeneration system can be realized, and shutdown is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of silica gel regeneration, in particular to a novel silica gel regeneration system. Background Art

[0002] Silica gel adsorbent is an auxiliary supporting facility of the synthetic ammonia system. It recovers moisture from the synthetic cycle gas after it passes through the oil separator and enters the motor terminal of the synthetic cycle gas compressor (turbine) to prevent the insulation value from being reduced or even short-circuited due to moisture. It can also prevent corrosion and ensure the safe and stable operation of the synthetic cycle gas compressor (turbine). After running for a period of time, the silica gel absorbs more and more water, resulting in a significant reduction in adsorption performance. In order to ensure that the water content of the protective gas of the synthetic cycle gas compressor (turbine) is within the index, it is necessary to ensure the adsorption performance of the silica gel. This requires that the silica gel needs to be regenerated once within a period of time, generally about one and a half months, and each regeneration period takes about 4 hours. In addition, the regenerated gas is released into the atmosphere through the vent valve, and the regeneration pressure is controlled by the air valve through which the water is released. The regeneration flow rate is controlled by the regeneration gas vent valve. This not only wastes the effective gas in the synthetic cycle gas, but also easily causes a fire risk due to improper air venting control. At the same time, since the synthetic cycle gas pressure is as high as 20.0Mpa and the ammonia content in the gas is about 3.5%, the regeneration pressure is also difficult to control. The ammonia content in the on-site environment exceeds the standard, and the noise environment is polluted. For this reason, the utility model proposes a new silica gel regeneration system. Utility Model Content

[0003] The purpose of the present invention is to provide a novel silica gel regeneration system to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: a novel silica gel regeneration system, comprising a circulating gas separator, one end of the circulating gas separator being connected to a first ammonia cooler and a second ammonia cooler respectively through a tee pipe, the end of the first ammonia cooler away from the circulating gas separator being connected to a first water separator, the end of the second ammonia cooler away from the circulating gas separator being connected to a second water separator, a first delivery pipe being installed at the upper end of the first water separator, a second delivery pipe being installed at the upper end of the second water separator, the end of the first delivery pipe away from the first water separator being connected to the first silica gel regenerator, the end of the second delivery pipe away from the second water separator being connected to the second silica gel regenerator, the upper ends of the first silica gel regenerator and the second silica gel regenerator being connected to the same turbine motor terminal flow pipe, the first silica gel regenerator and the second silica gel regenerator being further connected to the same hot gas exhaust pipe, the other end of the hot gas exhaust pipe being connected to an electric heater, and a gas source heating inlet pipe being installed at the lower end of the electric heater, and the input ends of the gas source heating inlet pipe being respectively connected to the second delivery pipe and the first delivery pipe.

[0005] As a preferred technical solution of the present invention, a first delivery and regeneration countercurrent pipe is further connected between the first delivery pipe and the first silicone regenerator, a second delivery and regeneration countercurrent pipe is further connected between the second delivery pipe and the second silicone regenerator, a countercurrent pipe is installed between the connection of the first delivery pipe and the first delivery and regeneration countercurrent pipe and the connection of the second delivery pipe and the second delivery and regeneration countercurrent pipe, and a regeneration gas vent pipe is installed at one end of the countercurrent pipe.

[0006] As a preferred technical solution of the present invention, it also includes a medium-pressure nitrogen pipe, and the medium-pressure nitrogen pipe is fixedly connected to the input end of the gas source heating inlet pipe.

[0007] As a preferred technical solution of the present invention, a first valve is provided on the gas source heating inlet pipe, and a second valve and a third valve are respectively installed on the countercurrent pipe at both sides of the regeneration gas vent pipe.

[0008] Compared with the prior art, the beneficial effects of the present invention are:

[0009] The utility model provides a novel silica gel regeneration system, which realizes a dual-path silica gel regeneration system by setting up a dual-path from a circulating gas separator to a first ammonia cooler or a second ammonia cooler, then from the first ammonia cooler or the second ammonia cooler into a first water separator or a second water separator, then from the first water separator or the second water separator into a first silica gel regenerator or a second silica gel regenerator through an electric heater, and finally flows into the turbine motor terminal through a flow pipe at the turbine motor terminal, thereby avoiding shutdown.

[0010] Other features and advantages of the present invention will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0012] In the figure: 1. circulating gas separator; 2. first ammonia cooler; 3. second ammonia cooler; 4. first water separator; 5. second water separator; 6. first delivery pipe; 7. second delivery pipe; 8. countercurrent pipe; 9. regeneration gas vent pipe; 10. first silica gel regenerator; 11. second silica gel regenerator; 12. first delivery and regeneration countercurrent pipe; 13. second delivery and regeneration countercurrent pipe; 14. electric heater; 15. medium-pressure nitrogen pipe; 16. hot gas discharge pipe; 17. turbine motor terminal flow direction pipe; 18. first valve; 19. second valve; 20. third valve; 21. gas source heating inlet pipe. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0014] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0015] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0016] See also Figure 1In this embodiment, a new silica gel regeneration system is provided, including a circulating gas separator 1, one end of the circulating gas separator 1 is connected to a first ammonia cooler 2 and a second ammonia cooler 3 respectively through a three-way pipe, the end of the first ammonia cooler 2 away from the circulating gas separator 1 is connected to a first water separator 4, the end of the second ammonia cooler 3 away from the circulating gas separator 1 is connected to a second water separator 5, the upper end of the first water separator 4 is installed with a first delivery pipe 6, the upper end of the second water separator 5 is installed with a second delivery pipe 7, the end of the first delivery pipe 6 away from the first water separator 4 is connected to the first silica gel regeneration unit 10, the end of the second delivery pipe 7 away from the second water separator 5 is connected to the second silica gel regenerator 11, the upper ends of the first silica gel regenerator 10 and the second silica gel regenerator 11 are connected to the same turbine motor terminal flow pipe 17, the first silica gel regenerator 10 and the second silica gel regenerator 11 are also connected to the same hot gas exhaust pipe 16, the other end of the hot gas exhaust pipe 16 is connected to the electric heater 14, and the lower end of the electric heater 14 is installed with a gas source heating inlet pipe 21, and the input end of the gas source heating inlet pipe 21 is respectively connected to the second delivery pipe 7 and the first delivery pipe 6, and the first delivery pipe 6 A first delivery and regeneration countercurrent pipe 12 is also connected to the first silica gel regenerator 10, and a second delivery and regeneration countercurrent pipe 13 is also connected between the second delivery pipe 7 and the second silica gel regenerator 11. A countercurrent pipe 8 is installed between the connection of the first delivery pipe 6, the first delivery and regeneration countercurrent pipe 12 and the connection of the second delivery pipe 7, the second delivery and regeneration countercurrent pipe 13. A regeneration gas vent pipe 9 is installed at one end of the countercurrent pipe 8. A first valve 18 is provided on the gas source heating inlet pipe 21. A second valve 19 and a third valve are respectively installed on the countercurrent pipe 8 at both sides of the regeneration gas vent pipe 9. 20. By setting up a dual path from the circulating gas separator 1 to the first ammonia cooler 2 or the second ammonia cooler 3, then from the first ammonia cooler 2 or the second ammonia cooler 3 to the first water separator 4 or the second water separator 5, then from the first water separator 4 or the second water separator 5 through the electric heater 14 to enter the first silica gel regenerator 10 or the second silica gel regenerator 11, and finally through the turbine motor terminal flow pipe 17 to flow into the turbine motor terminal, a dual-path silica gel regeneration system can be realized, and the silica gel regenerator on the inoperative path system can be regenerated in time, thereby avoiding shutdown.

[0017] In this embodiment, a medium-pressure nitrogen pipe 15 is also included, and the medium-pressure nitrogen pipe 15 is fixedly connected to the input end of the gas source heating inlet pipe 21. The main components include a newly equipped 3.0 MPa medium-pressure nitrogen pipe 15, a medium-pressure nitrogen valve installed thereon, and connection to the 3.0 MPa pressure nitrogen pipeline network. The 3.0 MPa medium-pressure nitrogen is introduced through the electric heater 14 of the regeneration system and the first silica gel regenerator 10 or the second silica gel regenerator 11, and then vented on site. The entire process is reverse flow regeneration. The utility model ensures the safe, stable and long-term operation of the synthetic cycle gas compressor. The method is simple, effective and practical, and is an advanced and reliable silica gel regeneration technology.

[0018] It should be noted that, in this embodiment, valves are installed on all pipelines in the novel silica gel regeneration system, and the number of valves is multiple. The valves can be used to open or close all pipelines in the regeneration system, so that the valves can be opened and closed according to the actual use path requirements to prevent the conflict between the reverse flow path and the gas source path separated by the water separator, ensuring safety during use. The use of 3.0Mpa medium-pressure nitrogen as an inert gas can fundamentally ensure the safety of silica gel regeneration, save synthetic recycle gas, reduce costs, and be pollution-free, avoiding environmental pollution. It has the characteristics of simple structure, easy processing, easy operation, and low investment. It is a specialized technology for silica gel and molecular sieve regeneration, and is widely used in fertilizer, coking, coal gas, and other industries.

[0019] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A new silica gel regeneration system, characterized in that: The invention comprises a circulating gas separator (1), one end of the circulating gas separator (1) is connected to a first ammonia cooler (2) and a second ammonia cooler (3) through a three-way pipe, the end of the first ammonia cooler (2) away from the circulating gas separator (1) is connected to a first water separator (4), the end of the second ammonia cooler (3) away from the circulating gas separator (1) is connected to a second water separator (5), the upper end of the first water separator (4) is installed with a first delivery pipe (6), the upper end of the second water separator (5) is installed with a second delivery pipe (7), the end of the first delivery pipe (6) away from the first water separator (4) is connected to a first silica gel regenerator (10), and the One end of the second delivery pipe (7) away from the second water separator (5) is connected to the second silica gel regenerator (11); the upper ends of the first silica gel regenerator (10) and the second silica gel regenerator (11) are connected to the same turbine motor terminal flow pipe (17); the first silica gel regenerator (10) and the second silica gel regenerator (11) are also connected to the same hot gas exhaust pipe (16); the other end of the hot gas exhaust pipe (16) is connected to the electric heater (14); and the lower end of the electric heater (14) is equipped with a gas source heating inlet pipe (21); and the input end of the gas source heating inlet pipe (21) is respectively connected to the second delivery pipe (7) and the first delivery pipe (6).

2. A novel silica gel regeneration system according to claim 1, characterized in that: A first delivery and regeneration countercurrent pipe (12) is further connected between the first delivery pipe (6) and the first silica gel regenerator (10), a second delivery and regeneration countercurrent pipe (13) is further connected between the second delivery pipe (7) and the second silica gel regenerator (11), a countercurrent pipe (8) is installed between the connection point of the first delivery pipe (6) and the first delivery and regeneration countercurrent pipe (12) and the connection point of the second delivery pipe (7) and the second delivery and regeneration countercurrent pipe (13), and a regeneration gas vent pipe (9) is installed at one end of the countercurrent pipe (8).

3. A novel silica gel regeneration system according to claim 1, characterized in that: It also includes a medium-pressure nitrogen pipe (15), and the medium-pressure nitrogen pipe (15) is fixedly connected to the input end of the gas source heating inlet pipe (21).

4. A novel silica gel regeneration system according to claim 2, characterized in that: The gas source heating inlet pipe (21) is provided with a first valve (18), and the countercurrent pipe (8) is provided with a second valve (19) and a third valve (20) at both sides of the regeneration gas vent pipe (9).

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