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Combined centrifugal compressor for continuous catalytic reforming units

A centrifugal compressor and reformer technology, which is applied in the petroleum industry, processing naphtha, etc., can solve problems such as insufficiency, and achieve the effects of reducing design and production costs, shortening production cycles, and reducing leakage

Inactive Publication Date: 2017-05-10
SHENYANG SITE MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the aforementioned "Pumps for Continuous Zhongzheng Devices" obviously cannot meet the requirements of their technology

Method used

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  • Combined centrifugal compressor for continuous catalytic reforming units
  • Combined centrifugal compressor for continuous catalytic reforming units

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1120

[0023] Example 1 Combined centrifugal compressor for 1.2 million tons / year continuous reforming unit

[0024] 1.2 million tons / year high-pressure cylinder centrifugal compressor for continuous reforming, adopts vertical split form, and the seven impellers are all closed impellers with an outer diameter of 700mm. There are shaft end seals, dry gas seals and other structures. The compression ratio of the whole machine is 1.73.

[0025] 1.2 million tons / year medium-pressure cylinder centrifugal compressor for continuous reforming, adopts vertical split form, and the seven impellers are all closed impellers with an outer diameter of 700mm. Equipped with shaft end seal, dry gas seal and other structures. The compression ratio of the whole machine is 2.01.

[0026] 1.2 million tons / year low-pressure cylinder centrifugal compressor for continuous reforming, adopts vertical split form, and the seven impellers are closed impellers with an outer diameter of 700mm. There are shaft en...

Embodiment 2

[0027] Example 2 Centrifugal compressor for 1 million tons / year continuous reforming unit

[0028] The high-pressure cylinder of the centrifugal compressor for 1 million tons / year continuous reforming is vertically split, and the seven impellers are all closed impellers with an outer diameter of 700mm. There are shaft end seals, dry gas seals and other structures. A compression ratio of 1.73 was achieved.

[0029] The medium-pressure cylinder of a centrifugal compressor for continuous reforming of 1 million tons per year adopts a vertically split form, and the seven impellers are all closed impellers with an outer diameter of 700mm. Equipped with shaft end seal, dry gas seal and other structures. The compression ratio of the whole machine is 2.01.

[0030] The low-pressure cylinder of the centrifugal compressor for 1 million tons / year continuous reforming is vertically split, and the seven impellers are all closed impellers with an outer diameter of 700mm. There are shaft ...

Embodiment 3

[0031] Example 3 Centrifugal compressor for 1.5 million tons / year continuous reforming unit

[0032] The high-pressure cylinder of the centrifugal compressor for 1.5 million tons / year continuous reforming is vertically split, and the ten impellers are all closed impellers with an outer diameter of 400mm. There are shaft end seals, dry gas seals and other structures. The compression ratio of the whole machine is 1.73.

[0033] The medium-pressure cylinder of the centrifugal compressor for 1.5 million tons / year continuous reforming is vertically split, and the seven impellers are all closed impellers with an outer diameter of 400mm. Equipped with shaft end seal, dry gas seal and other structures. The compression ratio of the whole machine is 2.01.

[0034] The low-pressure cylinder of the centrifugal compressor for 1.5 million tons / year continuous reforming is vertically split, and the eight impellers are all closed impellers with an outer diameter of 400mm. There are shaft ...

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Abstract

The invention relates to a combined centrifugal compressor for continuous catalytic reforming units. Each compressor comprises a spindle, impellers, diaphragms, a coupling, a diffuser, an upper casing, a lower casing, a sealing assembly, and bearings. The combined centrifugal compressor is characterized in that (1) the combined centrifugal compressor is of a tandem structure of a high-pressure cylinder compressor, a medium-pressure cylinder compressor and a low-pressure cylinder compressor; (2) each of the three compressors adopts a vertically split structure; (3) the impellers of each compressor adopt a string of sequentially mounted enclosed impellers with the same external diameter, and each stage of impeller is provided with an impeller cover for sealing, adopts hot assembly with the spindle, and is provided with a corresponding spindle sleeve for positioning; (4) the overall compression ratio of each compressor is 1.73 to 2.29. The combined centrifugal compressor for the continuous catalytic reforming units is adopted by a number of large petrochemical enterprises, and after stably operating for a period of time, the combined centrifugal compressor achieves an ideal technical effect, and also creates better economic benefit, gaining the unanimous praise of customers.

Description

technical field [0001] The invention relates to the technical field of hydrocarbon continuous reforming in petroleum secondary processing, and specifically provides a centrifugal compressor used for a hydrocarbon continuous reforming device. Background technique [0002] Continuous regenerative reforming using a moving bed reactor is referred to as continuous reforming. It uses low-octane straight-run naphtha and hydrogenated naphtha as raw materials, and uses Pt-Sn bimetallic catalysts to rearrange and isomerize molecules at a high temperature of about 500°C to increase aromatics. technology to increase gasoline octane rating. [0003] The existing industrialized continuous reforming process can usually be divided into two types according to the delivery mode of the catalyst: "downstream" and "countercurrent". The reaction mass is consistent; and "counter-current" means that the direction of "movement" of the catalyst between the reactors is opposite to that of the reacti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G59/02
CPCC10G59/02
Inventor 石雪松
Owner SHENYANG SITE MACHINERY MFG
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