Compressed air supply system

Abstract

The utility model belongs to the technical field of compressed air preparation, and particularly relates to a compressed air supply system, which is characterized by comprising a screw air compressor, an efficient degreaser, a refrigerated dryer, a micro-heat regeneration air dryer and a fine dust filter, an outlet of the screw air compressor is connected with a compressed air tank for desulfurization and production, an outlet of the freezing dryer is respectively connected with a micro-heat regeneration air dryer and a compressed air tank for dust removal, and an outlet of the micro-heat regeneration air dryer is sequentially connected with a fine dust filter and a purified compressed air tank for an instrument. Compared with the prior art, the system has the beneficial effects that corresponding process routes are formulated according to the quality requirements of different types of compressed air, energy is utilized in a gradient manner, and good economic benefits and social benefits are created.

Description

Technical Field

[0001] The utility model belongs to the technical field of compressed air preparation, and in particular relates to a compressed air supply system. Background Art

[0002] Compressed air, as an important power source, is widely used in various fields of industrial production. In the process of extracting compressed air using various air compressors, since the atmosphere itself inevitably contains some pollutants (solids, liquids, gases and various microorganisms), and some oil may be brought in during the equipment lubrication process, the compressed air produced must be purified according to relevant standards according to the requirements of different users and different uses for compressed air quality.

[0003] At present, the users of compressed air in coking plants are generally: compressed air for desulfurization and production, purified compressed air for instruments, and compressed air for dust removal. In addition to the compressed air used in the above processes, compressed air in coking plants can also be used in the following aspects: 1) Steam generator. Coking production plants require a large amount of steam. The steam generator needs to use an air preheater to preheat the compressed air and then inject it into the furnace. The high-pressure air is used to transfer the heat in the combustion chamber to the water to generate steam. 2) Washing facilities. In coking production, the emissions need to be washed and the washed substances are discharged through compressed air. 3) Workshop environment purification. The production workshop of the coking plant needs to use an air purifier for air filtration, and the toxic and harmful substances are purified by diluting with pressurized air or operating an air purification device. In summary, the role and use of compressed air in coking plants in production are very complete, and they provide important support and guarantee for coking production.

[0004] At present, the quality requirements of compressed air mainly include the following aspects: 1) Oil content: Impurities such as oil, water vapor, and dust must not be present in the compressed air. The oil content should comply with ISO8573-1 standard (international compressed air purity standard), and the oil mist content should be 1-5 mg / m 3 2) Condensate: Water vapor should also be removed from compressed air to avoid corrosion and damage to equipment. Condensate should comply with ISO8573-1 standard, with a moisture content of less than 0.1 mg / m 3 If a higher water purity is required, the water can be condensed and removed at a temperature below 2 degrees Celsius. 3) Stable quality: There should be no unstable factors such as temperature and pressure in the compressed air. Stable compressed air can ensure the stable operation of the equipment and the production quality.

[0005] Since the quality requirements of various compressed air application links in coking plants are different, there is no relevant report on how to optimize the compressed air supply process to reduce energy consumption while meeting quality requirements. Utility Model Content

[0006] The purpose of the utility model is to provide a compressed air supply system to overcome the shortcomings of the prior art. Aiming at the needs of the coking plant for compressed air of different qualities, the system uses a refrigerated dryer and a micro-heat regeneration air dryer to achieve energy cascade utilization and save energy consumption while meeting quality requirements.

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions:

[0008] A compressed air supply system, characterized in that it includes a screw air compressor, a high-efficiency oil remover, a refrigerated dryer, a micro-heat regeneration air dryer and a dust fine filter. The screw air compressor, the high-efficiency oil remover and the refrigerated dryer are connected in sequence. The outlet of the screw air compressor is connected to a compressed air tank for desulfurization and production, the outlet of the refrigerated dryer is respectively connected to the micro-heat regeneration air dryer and the compressed air tank for dust removal, and the outlet of the micro-heat regeneration air dryer is connected in sequence to a dust fine filter and a purified compressed air tank for instruments.

[0009] The screw air compressor is a single screw air compressor or a twin screw air compressor.

[0010] The high-efficiency oil remover is a three-stage oil removal filter, and a glass fiber filter element is arranged inside the filter.

[0011] The freeze dryer is a vacuum freeze dryer.

[0012] The micro-heat regeneration air dryer is a micro-heat regeneration adsorption compressed air dryer.

[0013] The dust fine filter is a vertical structure, which is equipped with a polyester fiber filter element.

[0014] Valves are provided on the air inlet and outlet pipelines of the compressed air tank for desulfurization and production, the compressed air tank for dust removal and the purified compressed air tank for instruments.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1) The use of refrigerated dryer reduces the load of the subsequent micro-heat regeneration air dryer, reduces the regeneration gas consumption of the micro-heat regeneration air dryer, reduces the design capacity of the preceding screw air compressor, and makes the overall process more energy-efficient;

[0017] 2) The micro-heat regeneration air dryer uses electric heating to raise the temperature of the regenerated gas to regenerate the desiccant, which consumes less regeneration gas than the heatless regeneration air dryer;

[0018] 3) According to the quality requirements of different types of compressed air, corresponding process routes are formulated and energy is utilized in a cascade manner, creating good economic and social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure and process flow chart of the utility model.

[0020] In the figure: 1- screw air compressor 2- high efficiency oil remover 3- refrigerated dryer 4- micro-heat regeneration air dryer 5- dust fine filter 6- compressed air storage tank for desulfurization and production 7- purified compressed air storage tank for instruments 8- compressed air storage tank for dust removal 9- compressed air for desulfurization and production 10- purified compressed air for instruments 11- compressed air for dust removal. DETAILED DESCRIPTION

[0021] The technical solution of the present utility model will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of the embodiments.

[0022] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the specific embodiments required to be used in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the specific embodiments described below are some implementation methods of the utility model. For ordinary technicians in this field, other specific embodiments can be obtained based on these specific embodiments without paying creative work.

[0023] The components of the embodiments of the present invention generally described and shown in the specific embodiments herein can be arranged and designed in countless different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the specific embodiments is not intended to limit the scope of the utility model claimed, but only represents the selected embodiments of the utility model.

[0024] See Figure 1, is a schematic structural diagram of an embodiment of a compressed air supply system of the utility model, comprising a screw air compressor 1, a high-efficiency oil remover 2, a refrigerated dryer 3, a micro-heat regeneration air dryer 4 and a dust fine filter 5. The screw air compressor 1, the high-efficiency oil remover 2 and the refrigerated dryer 3 are connected in sequence. The outlet of the screw air compressor 1 is connected to a desulfurization and production compressed air tank 6. The outlet of the refrigerated dryer 3 is respectively connected to the micro-heat regeneration air dryer 4 and a dust removal compressed air tank 7. The outlet of the micro-heat regeneration air dryer 4 is connected to a dust fine filter 5 and an instrument purified compressed air tank 8 in sequence. The micro-heat regeneration air dryer 4 performs further drying treatment. The dried purified compressed air passes through the dust fine filter 5 to remove solid particles that may exist in the compressed air, and is sent to the factory area instrument purified compressed air 10 users for use after passing through the instrument purified compressed air storage tank 7.

[0025] The screw air compressor 1 is a single screw air compressor or a twin screw air compressor, preferably a twin screw air compressor. The high efficiency oil remover 2 is a high efficiency three-stage oil removal filter, which is provided with a glass fiber filter element. The refrigerated dryer 3 is a vacuum refrigerated dryer. The micro-heat regeneration air dryer 4 is a micro-heat regeneration adsorption compressed air dryer. The dust fine filter 5 is a vertical structure, which is equipped with a polyester fiber filter element.

[0026] Valves are provided on the air inlet and outlet pipes of the compressed air tank 6 for desulfurization and production, the compressed air tank 7 for dust removal and the purified compressed air tank 8 for instruments, so as to output corresponding compressed air as required.

[0027] The utility model system has three quality levels of output, the first level is compressed air for desulfurization and production; the second level is compressed air for dust removal; the third level is purified compressed air for instruments; after the atmosphere is sucked in by the screw air compressor 1, the compressed gas is continuously sent out through the continuous rotation of the screw, and is sent to the first-level compressed air storage tank 6 for desulfurization and production, and then sent to the factory area desulfurization and production compressed air user 9 for use; after entering the high-efficiency oil remover 2 to remove dirt and oil in the compressed air, it enters the refrigeration dryer 3 for freeze drying, and then is divided into two routes for supply, of which the second level is sent to the dust removal compressed air storage tank 7 for the factory area dust removal and purification compressed air 10 users, and the third level is sent to the instrument purification compressed air storage tank 8, and the highest level of compressed air is sent to the factory area instrument purification compressed air user 11 for use.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A compressed air supply system, characterized in that: It includes a screw air compressor, a high-efficiency oil remover, a refrigerated dryer, a micro-heat regeneration air dryer and a dust fine filter. The screw air compressor, the high-efficiency oil remover and the refrigerated dryer are connected in sequence. The outlet of the screw air compressor is connected to a compressed air tank for desulfurization and production. The outlet of the refrigerated dryer is respectively connected to the micro-heat regeneration air dryer and the compressed air tank for dust removal. The outlet of the micro-heat regeneration air dryer is connected to the dust fine filter and the purified compressed air tank for instruments in sequence.

2. A compressed air supply system according to claim 1, characterized in that: The screw air compressor is a single screw air compressor or a twin screw air compressor.

3. A compressed air supply system according to claim 1, characterized in that: The high-efficiency oil remover is a three-stage oil removal filter, and a glass fiber filter element is arranged inside the filter.

4. A compressed air supply system according to claim 1, characterized in that: The freeze dryer is a vacuum freeze dryer.

5. A compressed air supply system according to claim 1, characterized in that: The micro-heat regeneration air dryer is a micro-heat regeneration adsorption compressed air dryer.

6. A compressed air supply system according to claim 1, characterized in that: The dust fine filter is a vertical structure, which is equipped with a polyester fiber filter element.

7. A compressed air supply system according to claim 1, characterized in that: Valves are provided on the air inlet and outlet pipelines of the compressed air tank for desulfurization and production, the compressed air tank for dust removal and the purified compressed air tank for instruments.

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