Device for low-load production of air separation plant

Technical Field

The utility model relates to a device for air-separation device load operation, in particular in the low-temperature air separation for oxygen on the use of the auxiliary device, which belongs to the technical field of cryogenic oxygen generating apparatus.

Background Art

The freezing method adopting a depth for producing oxygen is generally the technical means adopted, of the changes in the market as production, the air separation device to produce low load sometimes has to the enormous cost pressure should be. Found in the practical work, a large amount of the gas is reduced in the face of the had to the production and, because the air compressor is directly proportional to power consumption relationship with compressed air, to take pipe connected with the outlet pipe of the air compressor to replace the equipment for the production of the air compressor, the space division low load can be reduced when producing the unit production cost. Therefore, it is possible to design a new apparatus for air separation of the production device low load, so as to reduce the cost, of production under the low-load state.

Content of the utility model

The utility model the technical problem to be solved is to provide a can use a plurality of small air compressor with an air compressor to replace the production of low-load and low load for air separation plant production device.

Solve the above technical problem the technical scheme is:

A low load for air separation plant production device, which is composed of a plurality of more than two small air compressor and matching export valve, check valve, a bleed valve, each small air compressor and a non-return valve, an outlet valve are sequentially connected, the several outlet valve is connected with the pipeline, the connecting pipeline in cut off are respectively provided with outlet valve, wherein a small air compressor is connected with the outlet valve through the pipe and the other the outlet valve and the air separation equipment to connect, in each small air compressor with a check valve respectively on the connecting pipeline of the discharging valve is connected with a pipeline.

The above-mentioned is used for air separation plant for the production of low load, the station after the outlet valve of the air compressor is installed pressure flow meter, flow as elbow flow meter.

The beneficial effect of the utility model is:

The utility model can be two or more small air compressor to replace equipment itself to large air compressor, space division parking re-start is not used can be switching small an air compressor to the production division low load, can be according to the design of the load is minimum equipment is reduced 75%, electric power saving up to 50%. The utility model not only has the role of the space division low-load production, but also can the space division without stopping the continuous stable production of the premise, the structure is simple, the operation is convenient, safe and practical, the production cost is reduced significantly.

Description of drawings

Figure 1 is a structure diagram of the of the present utility model.

Figure captions are as follows: the air compressor 1 # 1, 2 # air compressor 2, the air compressor 3 # 3, the outlet valve 4, check valve 5, the bleeding valve 6, flow meter 7, air-separation device 8.

Mode of execution

The utility model is composed of more than two of the plurality of small air compressor and the outlet valve 4, check valve 5, the bleeding valve 6, flow meter 7 composition.

In the picture display, one of the utility model the embodiment of three small air compressor, the air compressor 1 # 1, 2 # air compressor 2, the air compressor 3 # 3. Each small air compressor and a check valve 5, an outlet valve 4 are connected in sequence, the three outlet valve 4 is connected with the pipeline, in the connecting pipe are respectively provided with two outlet valve 4 to partition, the three small air compressor is divided into independent loop, air compressor 2 # 2, the air compressor 3 # 3 and the air compressor 1 # 1 segment isolation, single supply can be realized.

Display in the Figure, the air compressor 1 # 1 connected with the outlet valve 4 through the pipe and the other an outlet valve 4 and the air-separation device 8 which is connected with, air-separation device 8 can be through the outlet valve 4 is respectively connected with the three station is connected with a small air compressor, used alone or in combination.

In the picture display, on each small air compressor and the check valve 5 are respectively on the connecting pipeline of the discharging valve is connected with a pipeline 6, each station outlet valve of the air compressor 4 the rear mounting pressure flow meter 7.

The utility model has the pipeline is a pressure-resistant stainless steel pipe, bearing 1.0 MPa, the outlet valve 4 for manual butterfly valve, flow meter 7 selects elbow flow meter.

The utility model not only has the role to a low load of production, but also can reduce the load of production stop point, its simple structure, convenient operation, stable production. Space division low load is used for the production process, can also be used for other large enterprises replace gas source.

The working process of the utility model are as follows:

The utility model is used for between the oxygen manufacture stands spatially compressor, is sent into the original equipment air amount is gradually reduced by the bleeding valve of the air compressor 6 for, in this device can also be the air compressor 1 # 1 outlet valve 4 for, at the same time gradually opening 2 # air compressor 2, the air compressor 3 # 3 of the outlet valve 4. Close surveillance in the process of opening the flow changes, the pressure change, so that stable constant pressure water supplier can approach, flow to reach its target.