An instrument air supply system

Abstract

The present application relates to the technical field of instrument gas supply in industrial park, and particularly relates to an instrument gas supply system. The structure comprises an air compressor, the air compressor is connected with a steam turbine, the air compressor is further connected with an air separation pre-cooling system and a purification system in sequence through pipelines, the purification system is connected with instrument gas pipe network users, the steam turbine is connected with a booster set through a pipeline, the purification system is connected with the booster set through a pipeline, the purification system is connected with an air separation main heat exchanger through a pipeline, the air separation main heat exchanger is connected with a rectifying tower through a pipeline, and the booster set is connected with the instrument gas pipe network users through at least two pipelines. The instrument gas supply system of the present application realizes the problem of insufficient use amount of industrial park instrument gas in the prior art through the design and improvement of the pipeline.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of instrument gas supply device in industrial park, and particularly relates to an instrument gas supply system. BACKGROUND

[0002] With the continuous development of chemical industry, the chemical park device is also expanding. Since the devices used in the whole chemical park are numerous and the production line is long, on the basis of the original public works, the instrument gas supply often cannot meet the expansion demand:

[0003] 1. The shortage of instrument gas affects the start-up progress;

[0004] 2. The shortage of instrument gas affects the continuous operation of the device;

[0005] 3. The shortage of instrument gas increases the personnel operation error;

[0006] 4. The shortage of instrument gas increases the labor intensity;

[0007] 5. The shortage of instrument gas damages the equipment and facilities;

[0008] 6. The shortage of instrument gas causes the operation reaction to be delayed, and the like.

[0009] The occurrence of any one of the series of problems will bring huge losses to the enterprise. SUMMARY

[0010] In order to solve the problems in the prior art, the present application provides an instrument gas supply system, which realizes the problem of insufficient use of instrument gas in the industrial park in the prior art through the design and improvement of the line.

[0011] The technical scheme adopted by the present application is as follows:

[0012] An instrument gas supply system, comprising an air compressor, wherein the air compressor is connected with a steam turbine, the air compressor is further connected with an air separation pre-cooling system and a purification system in sequence through pipelines, the purification system is connected with instrument gas pipe network users, the steam turbine is connected with a booster set through a pipeline, the purification system is connected with the booster set through a pipeline, the purification system is connected with an air separation main heat exchanger through a pipeline, the air separation main heat exchanger is connected with a rectifying tower through a pipeline, and the booster set is connected with the instrument gas pipe network users through at least two pipelines.

[0013] Preferably, the booster set is connected with the air separation main heat exchanger through a pipeline.

[0014] Preferably, the booster unit is connected to the expansion machine pressurizing end through a pipeline, the expansion machine pressurizing end is connected to the air separation main heat exchanger through a pipeline, the air separation main heat exchanger is connected to the expansion machine expanding end through a pipeline, and the expansion machine expanding end is connected to the rectification tower through a pipeline.

[0015] Preferably, the booster unit is composed of at least three groups of boosters connected in series.

[0016] Preferably, the gas from the purification system sent to the booster unit is compressed by two stages and then sent to the expansion machine pressurizing end, the gas out of the expansion machine pressurizing end is sent into the air separation main heat exchanger to exchange heat and then returned to the expansion machine expanding end, the gas out of the expansion machine expanding end is sent into the rectification tower to participate in rectification, and the rectified gas is sent to the user.

[0017] The technical scheme provided by the present application has the following beneficial effects:

[0018] The use of the instrument air supply system of the present application fully utilizes the existing device, adds pipelines through modification, and uses the primary and secondary gas sources of the booster to supplement the instrument air pipe network user, thereby ensuring the safe, stable, long-period and high-efficiency operation of the device to the maximum extent, and having huge economic benefits. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 The system structure diagram of the instrument air supply system of the present application. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0022] Embodiment one

[0023] As shown in the accompanying drawings, Figure 1 An instrument air supply system, comprising an air compressor 1, the air compressor 1 is connected to a steam turbine 3, the air compressor 1 is further connected to an air separation pre-cooling system 5 and a purification system 6 in sequence through pipelines, the purification system 6 is connected to an instrument air pipe network user 7, the steam turbine 3 is connected to a booster unit 2 through a pipeline, the purification system 6 is connected to the booster unit 2 through a pipeline, the purification system 6 is connected to an air separation main heat exchanger 8 through a pipeline, the air separation main heat exchanger 8 is connected to a rectification tower 9 through a pipeline, and the booster unit 2 is connected to the instrument air pipe network user 7 through at least two pipelines.

[0024] In this embodiment, the booster set 2 is connected to the air separation main heat exchanger 8 through a pipeline.

[0025] In this embodiment, the booster set 2 is connected to the expander booster end 10 through a pipeline, the expander booster end 10 is connected to the air separation main heat exchanger 8 through a pipeline, the air separation main heat exchanger 8 is connected to the expander expansion end 11 through a pipeline, and the expander expansion end 11 is connected to the rectification tower 9 through a pipeline.

[0026] In this embodiment, the booster set 2 is composed of at least three groups of boosters connected in series.

[0027] In this embodiment, the gas from the purification system 6 to the booster set 2 is compressed by two stages and then sent to the expander booster end 10, the gas out of the expander booster end 10 is sent into the air separation main heat exchanger 8 for heat exchange and then returned to the expander expansion end 11, the gas out of the expander expansion end 11 is sent into the rectification tower 9 for rectification, and the rectified gas is sent to the user 12.

[0028] In this embodiment, in the whole chemical park production, the air compressor 1 and the booster 2 are driven by the steam turbine 3 to work, the air 4 is filtered by a filter element and then enters the air compressor 1, the compressed air is sent to the air separation pre-cooling system 5, then to the purification system 6, the gas out of the purification system 6 is partly supplied to the instrument air pipe network user 7, partly sent to the booster 2, and the rest is sent to the air separation main heat exchanger 8 and then to the rectification tower 9.

[0029] In this embodiment, by increasing the pipeline 13 and the pipeline 14, the gas of the booster set 2 is supplemented to the instrument air system user 7, and the use of instrument air of the whole device system is realized.

[0030] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An instrument air supply system comprising an air compressor connected to a steam turbine, said air compressor further connected in series via piping to an air separation pre-cooling system and a purification system, said purification system connected to an instrument air pipe network user, characterised in that, The steam turbine is connected with the booster unit through a pipeline, the purification system is connected with the booster unit through a pipeline, the purification system is connected with the air separation main heat exchanger through a pipeline, the air separation main heat exchanger is connected with the rectification tower through a pipeline, the booster unit is connected with the instrument air pipe network user through at least two pipelines; the gas of the booster unit is supplemented to the instrument air system user through the pipelines, and the use of the instrument air of the whole device system is realized; the booster unit is connected with the air separation main heat exchanger through a pipeline; the booster unit is connected with the expander booster end through a pipeline, the expander booster end is connected with the air separation main heat exchanger through a pipeline, the air separation main heat exchanger is connected with the expander expansion end through a pipeline, and the expander expansion end is connected with the rectification tower through a pipeline; the gas sent from the purification system to the booster unit is sent to the expander booster end after two-stage compression, the gas out of the expander booster end is sent into the air separation main heat exchanger to exchange heat and then returns to the expander expansion end, the gas out of the expander expansion end is sent into the rectification tower to participate in rectification, and the rectified gas is sent to the user; the booster unit is composed of at least three groups of booster units connected in series; in the whole chemical industrial park production, the air compressor and the booster unit are driven to work by the steam turbine, the air is filtered through a filter element and then enters the air compressor, the compressed air is sent to the air separation precooling system, then sent to the purification system, part of the gas out of the purification system is externally supplied to the instrument air pipe network user, part of the gas is sent to the booster unit, and the rest of the gas is sent to the air separation main heat exchanger and then to the rectification tower.

Images