Boiler dust remover gas source optimization system

Abstract

The invention discloses an air source optimization system for a boiler dust remover. The air source optimization system comprises an air separation device, the boiler dust remover and three boiler air compressor devices, the boiler air compressor device comprises an air compressor and an air storage tank, the air compressor is connected with the air storage tank through an air inlet pipeline, an air inlet check valve is arranged on the air inlet pipeline, the air storage tank is connected with the boiler dust remover through an air outlet pipeline, and an air outlet check valve is arranged on the air outlet pipeline; the three boiler air compressor devices are sequentially arranged in the direction close to the boiler dust remover, the air separation device is connected with an air storage tank of the third boiler air compressor through a compressed air pipeline, and a front check valve and a rear check valve are sequentially arranged on the compressed air pipeline at intervals. The device has the advantages that the compressed air pipeline and the corresponding valve are arranged, compressed air of the air separation device is led to the air compressor, an air source is newly added to meet the use requirement of the boiler dust remover, the air compressor serves as a standby, the stability of the compressed air of the boiler dust remover is guaranteed, and the problems that the quality of the compressed air is poor and unstable at present are solved.

Description

Technical Field

[0001] The invention relates to the technical field of chemical industry, and in particular to an air source optimization system for a boiler dust collector. Background Art

[0002] The company currently has 3 Ingersoll Rand screw air compressors with operating pressures of 0.54MPa--0.64MPa, which are mainly used to switch the dust collector offline valve and ash cleaning valve of the boiler dust removal system. Because the dust collector offline valve uses a small amount of compressed air, one air compressor can meet the needs. To ensure its operational reliability, the operating mode is one on and one on standby. When the system pressure is lower than 0.54MPa during operation, the standby air compressor will automatically start pressurizing. When the system pressure exceeds 0.64MPa, the operating air compressor will automatically unload. The current air compressor has been running for a long time, the compressed air cold drying system is not effective, the compressed air quality is poor, and the pneumatic valves, solenoid valves, and cylinders of the dust removal system are often damaged, affecting the stable operation of the dust collector. Summary of the invention

[0003] The object of the present invention is to provide a boiler dust collector gas source optimization system to solve the above-mentioned problems existing in the prior art.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A boiler dust collector air source optimization system comprises an air separation device, a boiler dust collector and three boiler air compressor devices; the boiler air compressor device comprises an air compressor and an air storage tank, the air outlet end of the air compressor is connected to the air inlet end of the air storage tank via an air inlet pipeline, an air inlet check valve is arranged on the air inlet pipeline, the air outlet end of the air storage tank is connected to the air inlet end of the boiler dust collector via an air outlet pipeline, and an air outlet check valve is arranged on the air outlet pipeline; the three boiler air compressor devices are arranged in sequence along a direction close to the boiler dust collector, the air separation device is connected to the air inlet end of the air storage tank of the third boiler air compressor via a compressed air pipeline, and a front check valve and a rear check valve are arranged in sequence on the compressed air pipeline.

[0006] Preferably, the gas storage tank is provided with an on-site pressure gauge.

[0007] Preferably, the boiler air compressor device further includes a dryer, and the dryer is arranged between the gas storage tank and the gas outlet check valve.

[0008] Preferably, at least one exhaust pipeline is connected to the compressed air pipeline, and an exhaust check valve is provided on the pressure dividing pipeline.

[0009] Preferably, two exhaust pipelines are connected to the compressed air pipeline in sequence at intervals.

[0010] Preferably, the air outlet end of the air separation device is connected to a main air pipeline, a main check valve is provided on the main air pipeline, an air distribution pipeline is connected to the main air pipeline, both ends of the air distribution pipeline are respectively connected to the upstream and downstream of the main check valve, and a front air distribution check valve, a pneumatic valve and a rear air distribution check valve are sequentially provided on the air distribution pipeline; the compressed air pipeline is connected between the pneumatic valve and the rear air distribution check valve.

[0011] Preferably, the air separation device is an air separation steam turbine.

[0012] Preferably, the number of the boiler dust collectors is three;

[0013] Preferably, the air outlet pipelines of the three boiler air compressor devices are all connected to the collecting pipeline, and the air inlet end of each boiler dust collector is connected to the collecting pipeline.

[0014] Preferably, the diameter of the compressed air pipeline is DN100, the pressure is 0.7MPa, and the flow rate is 2280-3470Nm 3 / h.

[0015] The beneficial effects of the present invention are as follows: by setting up a compressed air pipeline and corresponding valves to lead the compressed air of the air separation unit to the air compressor, the compressed air pipeline can meet the use of the boiler dust collector, the newly added air source meets the use of the boiler dust collector, and the air compressor is used as a backup, thereby ensuring the stability of the compressed air of the boiler dust collector, solving the current problem of poor quality and instability of compressed air. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a structural diagram of the gas source optimization system in an embodiment of the present invention. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation methods described herein are only used to explain the present invention and are not used to limit the present invention.

[0018] like Figure 1As shown, in this embodiment, a boiler dust collector gas source optimization system is provided, including an air separation device, a boiler dust collector and three boiler air compressor devices; the boiler air compressor device includes an air compressor and an air storage tank, the air outlet end of the air compressor is connected to the air inlet end of the air storage tank via an air inlet pipeline, an air inlet check valve is arranged on the air inlet pipeline, the air outlet end of the air storage tank is connected to the air inlet end of the boiler dust collector via an air outlet pipeline, and an air outlet check valve is arranged on the air outlet pipeline; the three boiler air compressor devices are arranged in sequence along the direction close to the boiler dust collector, the air separation device is connected to the air inlet end of the air storage tank of the third boiler air compressor via a compressed air pipeline, and a front check valve and a rear check valve are arranged in sequence on the compressed air pipeline. By drawing compressed air from the air separation device to replace the air source of the air compressor of the boiler air compressor device, the quality of compressed air used for the boiler dust collector is effectively improved.

[0019] In this embodiment, the gas storage tank is provided with an on-site pressure gauge, which can directly reflect the pressure of the gas storage tank in real time. The boiler air compressor device also includes a dryer, which is arranged between the gas storage tank and the gas outlet check valve. The dryer is used to dehumidify the gas discharged from the gas storage tank to facilitate the gas to enter the boiler dust collector for dust removal.

[0020] In this embodiment, two exhaust pipelines are sequentially connected to the compressed air pipeline, and an exhaust check valve is provided on the pressure-dividing pipeline. The exhaust pipeline is used to exhaust the gas in the compressed air pipeline. When the air separation gas source fails, the front check valve and the rear check valve on the compressed air pipeline can be closed, and the exhaust check valve can be opened to discharge the gas source in the pipeline to prevent the gas source from entering the gas storage tank and affecting the normal operation of the subsequent boiler dust collector.

[0021] In this embodiment, the outlet end of the air separation device is connected to a main gas pipeline, a main check valve is arranged on the main gas pipeline, a gas distribution pipeline is connected to the main gas pipeline, the two ends of the gas distribution pipeline are respectively connected to the upstream and downstream of the main check valve, a front gas distribution check valve, a pneumatic valve and a rear gas distribution check valve are arranged on the gas distribution pipeline in sequence; the compressed air pipeline is connected between the pneumatic valve and the rear gas distribution check valve. The air separation device is an air separation steam turbine.

[0022] In this embodiment, the number of the boiler dust collectors is three. The air outlet pipelines of the three boiler air compressor devices are all connected to the collecting pipeline, and the air inlet end of each boiler dust collector is connected to the collecting pipeline.

[0023] In this embodiment, before the air source is incorporated into the system, the front air separation check valve and the front check valve are in an open state, and the exhaust check valves on the two exhaust pipelines are in a closed state. Before the air separation gas source is put into use, the first air compressor and the second air compressor are started, and the third air compressor is stopped, the air inlet check valve is opened, and the air outlet check valve is closed.

[0024] When the air source of the air separation is added to the system, slowly open the rear check valve, pay attention to the local pressure gauge on the gas storage tank of the third boiler air compressor device, when the pressure is higher than 0.6MPa, slowly open the outlet check valve, pay attention to the pressure of the gas storage tank of the third boiler air compressor device, the pressure is not less than 0.5MPa, until all the outlet check valves are opened, otherwise stop opening the outlet check valves. After the boiler air compressor device enters the standby state, the three air compressors are used as backup.

[0025] The compressed air pipeline leads the compressed air of the air separation unit to the air storage tank of the boiler air compressor unit, replacing the air compressor. The air compressor is currently in standby mode. The air compressor start pressure is set and a check valve is installed on the pipeline. When the air separation gas source fails, the air compressor can be started to ensure the air supply of the dust collector. The diameter of the compressed air pipeline is DN100, the pressure is 0.7Mpa, and the flow rate is 2280-3470Nm 3 / h, boiler dust collector uses a flow rate of about 1000Nm 3 / h, the newly added compressed air pipeline can fully meet the use of the boiler dust collector, the newly added air source can meet the use of the boiler dust collector, and the boiler air compressor is used as a backup to ensure the stability of the compressed air of the boiler dust collector.

[0026] The air source optimization system can effectively improve the quality of compressed air for boiler dust collectors and ensure the stability of valve operation. Compared with the existing system, one air compressor can be shut down, saving a lot of electricity. Compared with the existing system, the inspection and maintenance of the air compressor is reduced, and regular maintenance of equipment and air compressor oil can save a lot of money. The system takes air from the air separation unit of other projects, reducing energy consumption and increasing efficiency.

[0027] By adopting the above technical solution disclosed in the present invention, the following beneficial effects are obtained:

[0028] The present invention provides a boiler dust collector air source optimization system, which leads the compressed air of the air separation unit to the air compressor by setting a compressed air pipeline and corresponding valves. The compressed air pipeline can meet the use of the boiler dust collector, and the newly added air source meets the use of the boiler dust collector. The air compressor is used as a backup, thereby ensuring the stability of the compressed air of the boiler dust collector, and solving the current problems of poor quality and instability of compressed air.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be considered as the scope of protection of the present invention.

Claims

1. A boiler dust collector gas source optimization system, characterized in that: It comprises an air separation device, a boiler dust collector and three boiler air compressor devices; the boiler air compressor device comprises an air compressor and an air storage tank, the air outlet end of the air compressor is connected to the air inlet end of the air storage tank via an air inlet pipeline, an air inlet check valve is arranged on the air inlet pipeline, the air outlet end of the air storage tank is connected to the air inlet end of the boiler dust collector via an air outlet pipeline, and an air outlet check valve is arranged on the air outlet pipeline; the three boiler air compressor devices are arranged in sequence along the direction close to the boiler dust collector, the air separation device is connected to the air inlet end of the air storage tank of the third boiler air compressor via a compressed air pipeline, and a front check valve and a rear check valve are arranged in sequence on the compressed air pipeline.

2. The boiler dust collector gas source optimization system according to claim 1, characterized in that: The gas storage tank is provided with an on-site pressure gauge.

3. The boiler dust collector gas source optimization system according to claim 1, characterized in that: The boiler air compressor device also includes a dryer, which is arranged between the gas storage tank and the gas outlet check valve.

4. The boiler dust collector gas source optimization system according to claim 1, characterized in that: The compressed air pipeline is connected to at least one exhaust pipeline, and the pressure dividing pipeline is provided with an exhaust check valve.

5. The boiler dust collector gas source optimization system according to claim 4, characterized in that: The compressed air pipeline is connected to two exhaust pipelines in sequence at intervals.

6. The boiler dust collector gas source optimization system according to claim 1, characterized in that: The air outlet end of the air separation device is connected to the main air pipeline, and a main check valve is arranged on the main air pipeline. The main air pipeline is connected to the air distribution pipeline, and the two ends of the air distribution pipeline are respectively connected to the upstream and downstream of the main check valve. The front air distribution check valve, the pneumatic valve and the rear air distribution check valve are arranged on the air distribution pipeline in sequence; the compressed air pipeline is connected between the pneumatic valve and the rear air distribution check valve.

7. The boiler dust collector gas source optimization system according to claim 6, characterized in that: The air separation device is an air separation steam turbine.

8. The boiler dust collector gas source optimization system according to claim 1, characterized in that: The number of the boiler dust collectors is three.

9. The boiler dust collector gas source optimization system according to claim 8, characterized in that: The air outlet pipelines of the three boiler air compressor devices are all connected to the collecting pipeline, and the air inlet end of each boiler dust collector is connected to the collecting pipeline.

10. The boiler dust collector gas source optimization system according to claim 8, characterized in that: The diameter of the compressed air pipeline is DN100, the pressure is 0.7MPa, and the flow rate is 2280-3470Nm 3 / h.

Images