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Centrifugal compressor for butadiene C4 deep processing device

A centrifugal compressor and deep processing technology, which is applied to the components of the pumping device for elastic fluid, mechanical equipment, machines/engines, etc., can solve the function of the compressor and how to apply it has no reference value, does not involve the structure of the compressor, etc. question

Pending Publication Date: 2018-11-23
SHENYANG SITE MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Chinese patent application 201410389450.4 discloses "A Method for Preparing Isooctane by Deep Processing of C4", which does not involve the structure of the compressor itself, and has no reference value for the function of the compressor itself and how to apply it to the C4 deep processing process

Method used

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  • Centrifugal compressor for butadiene C4 deep processing device
  • Centrifugal compressor for butadiene C4 deep processing device
  • Centrifugal compressor for butadiene C4 deep processing device

Examples

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Effect test

Embodiment 1100

[0025] Example 1 Centrifugal compressor for 1 million tons / year continuous reforming unit

[0026] This embodiment 1 is a horizontally divided two-stage seven-stage centrifugal compressor, the diameter of the impeller is 450 mm, the blade adopts a backward curved structure, the wheel diameter ratio D1 / D2=1.14 (D0 / D2), and the first stage under the rated working condition is more The variable efficiency can reach up to 82.9%, and the variable efficiency of the second stage can reach up to 77.8%.

Embodiment 2

[0027] Example 2 Nitrogen centrifugal compressor for 100,000 tons / year polycarbonate project

[0028] This embodiment 2 is a two-stage eight-stage centrifugal compressor divided horizontally. The diameter of the impeller is 400mm. The variable efficiency can reach up to 74%, and the variable efficiency of the second stage can reach up to 74%.

Embodiment 3

[0029] Example 3 Centrifugal compressor for 100,000 tons / year industrial isooctane plant

[0030] Embodiment 3 is a horizontally divided two-stage eight-stage centrifugal compressor, with an impeller diameter of 600 mm, and its blades adopt a backward curved structure, and the wheel diameter ratio D1 / D2=0.84 (D0 / D2), and the first stage is variable under normal working conditions The highest efficiency can reach 82%, and the second-stage changeable efficiency can reach 76.3%.

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Abstract

The invention provides a centrifugal compressor for a butadiene C4 deep processing device. The centrifugal compressor is mainly composed of a stator group (comprising a machine shell, an isolation plate, a balance disc seal, an opening ring seal, an end cover and the like), a rotor group (including a main shaft, impellers, a spacer bush, a balance disc and the like), a bearing group (including a supporting bearing and a thrust bearing), a dry gas seal and the like, and is characterized in that (1) the compressor is provided with two sections of inlets / outlets and adopts a horizontal subdivision structure; (2) the compressor is provided with seven or eight impellers and the diameter of the impellers is phi520mm; all the impellers adopt backward bending blade type impellers; (3) matching andfixing each grade of separation plate and a seam allowance on the machine shell; (4) the supporting bearing adopts a tilting pad bearing; two sides of the main shaft adopt same structures at two sides and the thrust bearing is a Kinsbury type; (5) the balance disc is mounted at one side with high pressure and is used for balancing an axial force. The compressor provided by the invention is especially suitable for being applied to a butadiene C4 deep processing technology and very considerable economic benefits can be obtained.

Description

technical field [0001] The invention belongs to the technical field of petrochemical industry, and in particular relates to a centrifugal compressor used in a butadiene C4 deep processing project device. Background technique [0002] C4 deep processing uses a large amount of C4 hydrocarbons produced in the process of petroleum refining and petrochemical production as raw materials, and reacts with isobutane to generate isooctane under the action of a catalyst. [0003] This processing technology includes two parts: raw material hydrorefining and C4 deep processing. The purpose of raw material hydrorefining is to remove the harmful impurity "butadiene" in the C4 deep processing reaction. Selective hydrogenation technology is now used to remove butadiene in raw materials. The C4 deep processing technology using liquid acid as a catalyst can be divided into sulfuric acid method and hydrofluoric acid method. [0004] Chinese patent application 201410389450.4 discloses "A Metho...

Claims

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Application Information

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IPC IPC(8): F04D17/12F04D29/051F04D29/056F04D29/28F04D29/42
CPCF04D17/12F04D29/051F04D29/056F04D29/286F04D29/4206
Inventor 孙忠良
Owner SHENYANG SITE MACHINERY MFG
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